afs: Fix dynamic root getattr
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.18.8 by commit 7844ceada44eca740d31beb3d97b8511b1ca0a9b, it was introduced in version v5.18 by commit 2aeb8c86d49967552394d5e723f87454cb53f501. For more details please see the references link.