[PATCH net-next] net: rose: Remove NULL check before dev_{put, hold}

[Yang Li]

The call netdev_{put, hold} of dev_{put, hold} will check NULL,
so there is no need to check before using dev_{put, hold},
remove it to silence the warning：

./net/rose/rose_route.c:619:2-10: WARNING: NULL check before dev_{put, hold} functions is not needed.

Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4239
Signed-off-by: Yang Li <yang.lee@xxxxxxxxxxxxxxxxx>
---
 net/rose/rose_route.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/rose/rose_route.c b/net/rose/rose_route.c
index fee772b4637c..58d0312c0119 100644
--- a/net/rose/rose_route.c
+++ b/net/rose/rose_route.c
@@ -615,8 +615,7 @@ struct net_device *rose_dev_first(void)
 			if (first == NULL || strncmp(dev->name, first->name, 3) < 0)
 				first = dev;
 	}
-	if (first)
-		dev_hold(first);
+	dev_hold(first);
 	rcu_read_unlock();
 
 	return first;
-- 
2.20.1.7.g153144c