[PATCH] Cleanup in fs_devpts_inode.c

From: René Scharfe <l.s.r@web.de>

  This un-complicates a small piece of code of the dev/pts filesystem
  and decreases the size of the object code by 8 bytes for my build.

  Yay! :)

fs/devpts/inode.c

@@ -183,9 +183,8 @@ static int __init init_devpts_fs(void)
 	err = register_filesystem(&devpts_fs_type);
 	if (!err) {
 		devpts_mnt = kern_mount(&devpts_fs_type);
+		if (IS_ERR(devpts_mnt))
 			err = PTR_ERR(devpts_mnt);
-		if (!IS_ERR(devpts_mnt))
-			err = 0;
 	}
 	return err;
 }