[tip: sched/psi] class: use IS_ERR_OR_NULL() helper in class_unregister()

["tip-bot2 for Yang Yingliang" <tip-bot2@linutronix.de>]

The following commit has been merged into the sched/psi branch of tip:

Commit-ID:     e9628e015fe205f10766f031f17e217f85650570
Gitweb:        https://git.kernel.org/tip/e9628e015fe205f10766f031f17e217f85650570
Author:        Yang Yingliang <yangyingliang@huawei.com>
AuthorDate:    Mon, 22 Aug 2022 14:19:22 +08:00
Committer:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CommitterDate: Thu, 01 Sep 2022 18:15:40 +02:00

class: use IS_ERR_OR_NULL() helper in class_unregister()

Use IS_ERR_OR_NULL() helper in class_unregister() to simplify code.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220822061922.3884113-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/base/class.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/class.c b/drivers/base/class.c
index 8feb85e..64f7b9a 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -260,7 +260,7 @@ EXPORT_SYMBOL_GPL(__class_create);
  */
 void class_destroy(struct class *cls)
 {
-	if ((cls == NULL) || (IS_ERR(cls)))
+	if (IS_ERR_OR_NULL(cls))
 		return;
 
 	class_unregister(cls);