switch follow_down()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 64a288e..f01caec 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -154,7 +154,7 @@
 	goto out;
 out_follow:
 	while (d_mountpoint(nd->path.dentry) &&
-	       follow_down(&nd->path.mnt, &nd->path.dentry))
+	       follow_down(&nd->path))
 		;
 	err = 0;
 	goto out;