[media] media: rc: lirc_dev: check kobject_set_name() result

kobject_set_name() may fail with -ENOMEM, check for it.
Signed-off-by: NVasiliy Kulikov <segoon@openwall.com>
Acked-by: NJarod Wilson <jarod@redhat.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/rc/lirc_dev.c

@@ -178,7 +178,9 @@ static int lirc_cdev_add(struct irctl *ir)
 		cdev_init(cdev, &lirc_dev_fops);
 		cdev->owner = THIS_MODULE;
 	}
-	kobject_set_name(&cdev->kobj, "lirc%d", d->minor);
+	retval = kobject_set_name(&cdev->kobj, "lirc%d", d->minor);
+	if (retval)
+		return retval;
 
 	retval = cdev_add(cdev, MKDEV(MAJOR(lirc_base_dev), d->minor), 1);
 	if (retval)