xfrm: fix set but not used warning in xfrm_policy_queue_process()

err was set but unused.
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

net/xfrm/xfrm_policy.c

@@ -1878,7 +1878,6 @@ xfrm_resolve_and_create_bundle(struct xfrm_policy **pols, int num_pols,
 
 static void xfrm_policy_queue_process(unsigned long arg)
 {
-	int err = 0;
 	struct sk_buff *skb;
 	struct sock *sk;
 	struct dst_entry *dst;
@@ -1941,7 +1940,7 @@ static void xfrm_policy_queue_process(unsigned long arg)
 		skb_dst_drop(skb);
 		skb_dst_set(skb, dst);
 
-		err = dst_output(skb);
+		dst_output(skb);
 	}
 
 out: