openvswitch: set correct protocol on route lookup

Respect what the caller passed to ovs_tunnel_get_egress_info.

Fixes: 8f0aad6f35 ("openvswitch: Extend packet attribute for egress tunnel info")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/openvswitch/vport.c

@@ -600,7 +600,7 @@ int ovs_tunnel_get_egress_info(struct ovs_tunnel_info *egress_tun_info,
 	fl.saddr = tun_key->ipv4_src;
 	fl.flowi4_tos = RT_TOS(tun_key->ipv4_tos);
 	fl.flowi4_mark = skb_mark;
-	fl.flowi4_proto = IPPROTO_GRE;
+	fl.flowi4_proto = ipproto;
 
 	rt = ip_route_output_key(net, &fl);
 	if (IS_ERR(rt))