NFS: Memory allocation failures are not server fatal errors

We need to filter out ENOMEM in nfs_error_is_fatal_on_server(), because
running out of memory on our client is not a server error.

Reported-by: Olga Kornievskaia <aglo@umich.edu>
Fixes: 2dc23af ("NFS: ENOMEM should also be a fatal error.")
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

fs/nfs/internal.h

@@ -841,6 +841,7 @@ static inline bool nfs_error_is_fatal_on_server(int err)
 	case 0:
 	case -ERESTARTSYS:
 	case -EINTR:
+	case -ENOMEM:
 		return false;
 	}
 	return nfs_error_is_fatal(err);