net: use kfree_skb_list() helper in more places

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index b7a3e7b..2e6a0db 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -701,11 +701,7 @@
 			return 0;
 		}
 
-		while (frag) {
-			skb = frag->next;
-			kfree_skb(frag);
-			frag = skb;
-		}
+		kfree_skb_list(frag);
 
 		IP6_INC_STATS(net, ip6_dst_idev(&rt->dst),
 			      IPSTATS_MIB_FRAGFAILS);