pps: class_create() returns an ERR_PTR, not NULL

class_create() never returns NULLs only ERR_PTRs.

Signed-off-by: Dan Carpenter <[email protected]>
Cc: Rodolfo Giometti <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: Dan Carpenter

drivers/pps/pps.c

@@ -369,9 +369,9 @@ static int __init pps_init(void)
 	int err;
 
 	pps_class = class_create(THIS_MODULE, "pps");
-	if (!pps_class) {
+	if (IS_ERR(pps_class)) {
 		pr_err("failed to allocate class\n");
-		return -ENOMEM;
+		return PTR_ERR(pps_class);
 	}
 	pps_class->dev_attrs = pps_attrs;