vxlan: Refactor vxlan_udp_encap_recv() to kill compiler warning

drivers/net/vxlan.c: In function ‘vxlan_udp_encap_recv’:
drivers/net/vxlan.c:1226: warning: ‘info’ may be used uninitialized in this function

While this warning is a false positive, it can be killed easily by
getting rid of the pointer intermediary and referring directly to the
ip_tunnel_info structure.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: NJiri Benc <jbenc@redhat.com>
Acked-by: NThomas Graf <tgraf@suug.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/vxlan.c

@@ -1223,7 +1223,6 @@ static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb,
 static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
 {
 	struct metadata_dst *tun_dst = NULL;
-	struct ip_tunnel_info *info;
 	struct vxlan_sock *vs;
 	struct vxlanhdr *vxh;
 	u32 flags, vni;
@@ -1270,8 +1269,7 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
 		if (!tun_dst)
 			goto drop;
 
-		info = &tun_dst->u.tun_info;
-		md = ip_tunnel_info_opts(info);
+		md = ip_tunnel_info_opts(&tun_dst->u.tun_info);
 	} else {
 		memset(md, 0, sizeof(*md));
 	}
@@ -1286,7 +1284,7 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
 		md->gbp = ntohs(gbp->policy_id);
 
 		if (tun_dst)
-			info->key.tun_flags |= TUNNEL_VXLAN_OPT;
+			tun_dst->u.tun_info.key.tun_flags |= TUNNEL_VXLAN_OPT;
 
 		if (gbp->dont_learn)
 			md->gbp |= VXLAN_GBP_DONT_LEARN;