[NETFILTER]: Drop conntrack reference in ip_call_ra_chain()/ip_mr_input()

Drop reference before handing the packets to raw_rcv()

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 2b7485e..af2ec88 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -184,6 +184,7 @@
 					raw_rcv(last, skb2);
 			}
 			last = sk;
+			nf_reset(skb);
 		}
 	}