1 files changed, 21 insertions, 33 deletions

diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
index b8960f3527f3..e453cb724a95 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);
 }