ipv6: ip6_route_output() never returns NULL.

ip6_route_output() never returns NULL, so it is wrong to
check if the return value is NULL.

Signed-off-by: RongQing.Li <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index d8f02ef88e59..c964958ac470 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1545,9 +1545,10 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
                          &saddr_buf, &ipv6_hdr(skb)->saddr, dev->ifindex);
 
         dst = ip6_route_output(net, NULL, &fl6);
-        if (dst == NULL)
+        if (dst->error) {
+                dst_release(dst);
                 return;
-
+        }
         dst = xfrm_lookup(net, dst, flowi6_to_flowi(&fl6), NULL, 0);
         if (IS_ERR(dst))
                 return;