net: Specify the owning module for lwtunnel ops

Modules implementing lwtunnel ops should not be allowed to unload
while there is state alive using those ops, so specify the owning
module for all lwtunnel ops.

Signed-off-by: Robert Shearman <rshearma@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/mpls/mpls_iptunnel.c

@@ -215,6 +215,7 @@ static const struct lwtunnel_encap_ops mpls_iptun_ops = {
 	.fill_encap = mpls_fill_encap_info,
 	.get_encap_size = mpls_encap_nlsize,
 	.cmp_encap = mpls_encap_cmp,
+	.owner = THIS_MODULE,
 };
 
 static int __init mpls_iptunnel_init(void)