nfsd4: kill unnecessary check in preprocess_stateid_op

This condition is always true.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index b83b58d..a40d1ec 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2052,7 +2052,7 @@
 		renew_client(stp->st_stateowner->so_client);
 		if (filpp)
 			*filpp = stp->st_vfs_file;
-	} else if (dp) {
+	} else {
 		if ((status = nfs4_check_delegmode(dp, flags)))
 			goto out;
 		renew_client(dp->dl_client);