tun: remove unnecessary check in tun_flow_update

caller has guaranted that rxhash is not zero

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index d0745dc81976..6760b86547df 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -529,10 +529,7 @@ static void tun_flow_update(struct tun_struct *tun, u32 rxhash,
         unsigned long delay = tun->ageing_time;
         u16 queue_index = tfile->queue_index;
 
-        if (!rxhash)
-                return;
-        else
-                head = &tun->flows[tun_hashfn(rxhash)];
+        head = &tun->flows[tun_hashfn(rxhash)];
 
         rcu_read_lock();