xsk: fix refcount underflow in error path

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/xdp/xsk.c"
                    ],
                    "versions": [
                        {
                            "version": "f7019562f142bc041f9cde63af338d1886585923",
                            "lessThan": "789fcd94c9cac133dd4d96e193188661aca9f6c3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ba3beec2ec1d3b4fd8672ca6e781dac4b3267f6e",
                            "lessThan": "15b453cf7348973217558235b9ece2ee5fea6777",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ba3beec2ec1d3b4fd8672ca6e781dac4b3267f6e",
                            "lessThan": "3e7722c31d4167eb7f3ffd35aba52cab69b79072",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ba3beec2ec1d3b4fd8672ca6e781dac4b3267f6e",
                            "lessThan": "85c2c79a07302fe68a1ad5cc449458cc559e314d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9f0c8a9d4ef1b9ebee0e4ac2495fe790727044aa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5.15.47",
                            "lessThan": "5.15.127",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.17.15",
                            "lessThan": "5.18",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/xdp/xsk.c"
                    ],
                    "versions": [
                        {
                            "version": "5.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.127",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.46",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.4.11",
                            "lessThanOrEqual": "6.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }