Pull nfsd fixes from Chuck Lever:
 "Bug fixes for NFSD error handling paths"

* tag 'nfsd-5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  NFSD: Keep existing listeners on portlist error
  SUNRPC: fix sign error causing rpcsec_gss drops
  nfsd: Fix a warning for nfsd_file_close_inode
  nfsd4: Handle the NFSv4 READDIR 'dircount' hint being zero
  nfsd: fix error handling of register_pernet_subsys() in init_nfsd()