1 files changed, 21 insertions, 33 deletions

diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
index b8960f3527f..e453cb724a9 100644
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -534,40 +534,28 @@ static struct rtnl_link_ops vti_link_ops __read_mostly = {
 
 static int __init vti_init(void)
 {
+	const char *msg;
 	int err;
 
-	pr_info("IPv4 over IPSec tunneling driver\n");
+	pr_info("IPv4 over IPsec tunneling driver\n");
 
+	msg = "tunnel device";
 	err = register_pernet_device(&vti_net_ops);
 	if (err < 0)
-		return err;
-	err = xfrm4_protocol_register(&vti_esp4_protocol, IPPROTO_ESP);
-	if (err < 0) {
-		unregister_pernet_device(&vti_net_ops);
-		pr_info("vti init: can't register tunnel\n");
-
-		return err;
-	}
+		goto pernet_dev_failed;
 
+	msg = "tunnel protocols";
+	err = xfrm4_protocol_register(&vti_esp4_protocol, IPPROTO_ESP);
+	if (err < 0)
+		goto xfrm_proto_esp_failed;
 	err = xfrm4_protocol_register(&vti_ah4_protocol, IPPROTO_AH);
-	if (err < 0) {
-		xfrm4_protocol_deregister(&vti_esp4_protocol, IPPROTO_ESP);
-		unregister_pernet_device(&vti_net_ops);
-		pr_info("vti init: can't register tunnel\n");
-
-		return err;
-	}
-
+	if (err < 0)
+		goto xfrm_proto_ah_failed;
 	err = xfrm4_protocol_register(&vti_ipcomp4_protocol, IPPROTO_COMP);
-	if (err < 0) {
-		xfrm4_protocol_deregister(&vti_ah4_protocol, IPPROTO_AH);
-		xfrm4_protocol_deregister(&vti_esp4_protocol, IPPROTO_ESP);
-		unregister_pernet_device(&vti_net_ops);
-		pr_info("vti init: can't register tunnel\n");
-
-		return err;
-	}
+	if (err < 0)
+		goto xfrm_proto_comp_failed;
 
+	msg = "netlink interface";
 	err = rtnl_link_register(&vti_link_ops);
 	if (err < 0)
 		goto rtnl_link_failed;
@@ -576,23 +564,23 @@ static int __init vti_init(void)
 
 rtnl_link_failed:
 	xfrm4_protocol_deregister(&vti_ipcomp4_protocol, IPPROTO_COMP);
+xfrm_proto_comp_failed:
 	xfrm4_protocol_deregister(&vti_ah4_protocol, IPPROTO_AH);
+xfrm_proto_ah_failed:
 	xfrm4_protocol_deregister(&vti_esp4_protocol, IPPROTO_ESP);
+xfrm_proto_esp_failed:
 	unregister_pernet_device(&vti_net_ops);
+pernet_dev_failed:
+	pr_err("vti init: failed to register %s\n", msg);
 	return err;
 }
 
 static void __exit vti_fini(void)
 {
 	rtnl_link_unregister(&vti_link_ops);
-	if (xfrm4_protocol_deregister(&vti_ipcomp4_protocol, IPPROTO_COMP))
-		pr_info("vti close: can't deregister tunnel\n");
-	if (xfrm4_protocol_deregister(&vti_ah4_protocol, IPPROTO_AH))
-		pr_info("vti close: can't deregister tunnel\n");
-	if (xfrm4_protocol_deregister(&vti_esp4_protocol, IPPROTO_ESP))
-		pr_info("vti close: can't deregister tunnel\n");
-
-
+	xfrm4_protocol_deregister(&vti_ipcomp4_protocol, IPPROTO_COMP);
+	xfrm4_protocol_deregister(&vti_ah4_protocol, IPPROTO_AH);
+	xfrm4_protocol_deregister(&vti_esp4_protocol, IPPROTO_ESP);
 	unregister_pernet_device(&vti_net_ops);
 }