nfsd: Fix a memory leak in an error handling path
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 v5.4.220 by commit acc393aecda05bf64ed13b732931462e07a1bf08, it was introduced in version v5.4 by commit 6ee95d1c899186c0798cafd25998d436bcdb9618. For more details please see the references link.