drm: fix race between partial drm_dev_register() failure and ioctl

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/drm_drv.c"
                    ],
                    "versions": [
                        {
                            "version": "bee330f3d67273a68dcb99f59480d59553c008b2",
                            "lessThan": "26d9162213952927cd59c0d94b7e0e992b347bec",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bee330f3d67273a68dcb99f59480d59553c008b2",
                            "lessThan": "24d28d15c0f7f7d4a1c229f8730314f0f8758810",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bee330f3d67273a68dcb99f59480d59553c008b2",
                            "lessThan": "6729990df9e70623bf53f855b521ae71ca9cb278",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bee330f3d67273a68dcb99f59480d59553c008b2",
                            "lessThan": "a0a7e2e177f2f18b9e7318a4c64ac44efd9ef22c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bee330f3d67273a68dcb99f59480d59553c008b2",
                            "lessThan": "19dbfe4d586aecfed121cb3fa62281761d9d341f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bee330f3d67273a68dcb99f59480d59553c008b2",
                            "lessThan": "79d09cfe90304ff4f195e47d569800f5e0f8b854",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bee330f3d67273a68dcb99f59480d59553c008b2",
                            "lessThan": "2d1215a72159d00001e08dee162e27718934bee9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "bee330f3d67273a68dcb99f59480d59553c008b2",
                            "lessThan": "eb197f7d60f00d0f5b1b3505dfc86a7e36045a3e",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/drm_drv.c"
                    ],
                    "versions": [
                        {
                            "version": "4.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.270",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.51",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.5",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }