afs: Fix page leak
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 v5.14.9 by commit d130b5fdd42254d92948d06347940276140c927e, it was introduced in version v5.13 by commit e87b03f5830ecd8ca21836d3ee48c74f8d58fa31. For more details please see the references link.