arch/sh/mm/asids-debugfs.c: use PTR_ERR_OR_ZERO

Replace IS_ERR/PTR_ERR.
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

arch/sh/mm/asids-debugfs.c

@@ -67,10 +67,8 @@ static int __init asids_debugfs_init(void)
 					   NULL, &asids_debugfs_fops);
 	if (!asids_dentry)
 		return -ENOMEM;
-	if (IS_ERR(asids_dentry))
-		return PTR_ERR(asids_dentry);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(asids_dentry);
 }
 module_init(asids_debugfs_init);