ipv6: minor code reorg in inet6_fill_ifla6_attrs()

Just put related code together to ease code reading: the memcpy() is
related to the nla_reserve().
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/addrconf.c

@@ -5552,14 +5552,13 @@ static int inet6_fill_ifla6_attrs(struct sk_buff *skb, struct inet6_dev *idev,
 	nla = nla_reserve(skb, IFLA_INET6_TOKEN, sizeof(struct in6_addr));
 	if (!nla)
 		goto nla_put_failure;
-
-	if (nla_put_u8(skb, IFLA_INET6_ADDR_GEN_MODE, idev->cnf.addr_gen_mode))
-		goto nla_put_failure;
-
 	read_lock_bh(&idev->lock);
 	memcpy(nla_data(nla), idev->token.s6_addr, nla_len(nla));
 	read_unlock_bh(&idev->lock);
 
+	if (nla_put_u8(skb, IFLA_INET6_ADDR_GEN_MODE, idev->cnf.addr_gen_mode))
+		goto nla_put_failure;
+
 	return 0;
 
 nla_put_failure: