CVE-2025-39783 PCI: endpoint: Fix configfs group list head handling

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    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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      "drivers/pci/endpoint/pci-epf-core.c"
    ],
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      {
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]