inet: frags: use INC_STATS_BH in the ipv6 reassembly code

Softirqs are already disabled so no need to do it again, thus let's be
consistent and use the IP6_INC_STATS_BH variant.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/reassembly.c

@@ -355,8 +355,8 @@ found:
 discard_fq:
 	inet_frag_kill(&fq->q, &ip6_frags);
 err:
-	IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
-		      IPSTATS_MIB_REASMFAILS);
+	IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
+			 IPSTATS_MIB_REASMFAILS);
 	kfree_skb(skb);
 	return -1;
 }
@@ -566,7 +566,8 @@ static int ipv6_frag_rcv(struct sk_buff *skb)
 	return -1;
 
 fail_hdr:
-	IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_INHDRERRORS);
+	IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)),
+			 IPSTATS_MIB_INHDRERRORS);
 	icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, skb_network_header_len(skb));
 	return -1;
 }