iommu/amd: Fix undefined behavior in devid_write debugfs function

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/amd/debugfs.c"
                    ],
                    "versions": [
                        {
                            "version": "2e98940f123d9c69d4759078aea9a536244c98d3",
                            "lessThan": "8aabe0fba01486b5d893e708b05a8fa7f1b7efbb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2e98940f123d9c69d4759078aea9a536244c98d3",
                            "lessThan": "99d42aef089a07cfb1d404a7227ac9dc7628b497",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2e98940f123d9c69d4759078aea9a536244c98d3",
                            "lessThan": "843e149989665f8309ad2efe6048dc76591e1f94",
                            "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/iommu/amd/debugfs.c"
                    ],
                    "versions": [
                        {
                            "version": "6.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.17",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }