nfs/nfs4recover: avoid pointless cred reference count bump

The code already got rid of the extra reference count from the old
version of override_creds().

Link: https://lore.kernel.org/r/[email protected]
Acked-by: Chuck Lever <[email protected]>
Reviewed-by: Jeff Layton <[email protected]>
Reviewed-by: Jens Axboe <[email protected]>
Signed-off-by: Christian Brauner <[email protected]>

Author: brauner

fs/nfsd/nfs4recover.c

@@ -81,8 +81,7 @@ nfs4_save_creds(const struct cred **original_creds)
 
 	new->fsuid = GLOBAL_ROOT_UID;
 	new->fsgid = GLOBAL_ROOT_GID;
-	*original_creds = override_creds(get_new_cred(new));
-	put_cred(new);
+	*original_creds = override_creds(new);
 	return 0;
 }