ipv6: Remove flowi6_oif compare from __ip6_route_redirect

In the review of 0b34eb00 ("ipv6: Refactor __ip6_route_redirect"),
Martin noted that the flowi6_oif compare is moved to the new helper and
should be removed from __ip6_route_redirect. Fix the oversight.

Fixes: 0b34eb00 ("ipv6: Refactor __ip6_route_redirect")
Reported-by: NMartin Lau <kafai@fb.com>
Signed-off-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/route.c

@@ -2471,8 +2471,6 @@ static struct rt6_info *__ip6_route_redirect(struct net *net,
 			continue;
 		if (rt->fib6_flags & RTF_REJECT)
 			break;
-		if (fl6->flowi6_oif != rt->fib6_nh.fib_nh_dev->ifindex)
-			continue;
 		if (ip6_redirect_nh_match(rt, &rt->fib6_nh, fl6,
 					  &rdfl->gateway, &ret))
 			goto out;