netfilter: nf_ct_labels: move initialization out of pernet_operations

Move the global initial codes to the module_init/exit context.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/net/netfilter/nf_conntrack_labels.c b/net/netfilter/nf_conntrack_labels.c
index e1d1eb8..8fe2e99 100644
--- a/net/netfilter/nf_conntrack_labels.c
+++ b/net/netfilter/nf_conntrack_labels.c
@@ -101,15 +101,12 @@
 	.id     = NF_CT_EXT_LABELS,
 };
 
-int nf_conntrack_labels_init(struct net *net)
+int nf_conntrack_labels_init(void)
 {
-	if (net_eq(net, &init_net))
-		return nf_ct_extend_register(&labels_extend);
-	return 0;
+	return nf_ct_extend_register(&labels_extend);
 }
 
-void nf_conntrack_labels_fini(struct net *net)
+void nf_conntrack_labels_fini(void)
 {
-	if (net_eq(net, &init_net))
-		nf_ct_extend_unregister(&labels_extend);
+	nf_ct_extend_unregister(&labels_extend);
 }