[PATCH] Bluetooth: Use common error handling code in bt_init()

[SF Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Wed, 8 Nov 2017 08:03:04 +0100

* Improve jump targets so that a bit of exception handling can be better
  reused at the end of this function.

* Adjust five condition checks.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
 net/bluetooth/af_bluetooth.c | 38 +++++++++++++++++---------------------
 1 file changed, 17 insertions(+), 21 deletions(-)

diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 91e3ba280706..f044202346c6 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -766,43 +766,39 @@ static int __init bt_init(void)
                return err;
 
        err = sock_register(&bt_sock_family_ops);
-       if (err < 0) {
-               bt_sysfs_cleanup();
-               return err;
-       }
+       if (err)
+               goto cleanup_sysfs;
 
        BT_INFO("HCI device and connection manager initialized");
 
        err = hci_sock_init();
-       if (err < 0)
-               goto error;
+       if (err)
+               goto unregister_socket;
 
        err = l2cap_init();
-       if (err < 0)
-               goto sock_err;
+       if (err)
+               goto cleanup_socket;
 
        err = sco_init();
-       if (err < 0) {
-               l2cap_exit();
-               goto sock_err;
-       }
+       if (err)
+               goto cleanup_cap;
 
        err = mgmt_init();
-       if (err < 0) {
-               sco_exit();
-               l2cap_exit();
-               goto sock_err;
-       }
+       if (err)
+               goto cleanup_sco;
 
        return 0;
 
-sock_err:
+cleanup_sco:
+       sco_exit();
+cleanup_cap:
+       l2cap_exit();
+cleanup_socket:
        hci_sock_cleanup();
-
-error:
+unregister_socket:
        sock_unregister(PF_BLUETOOTH);
+cleanup_sysfs:
        bt_sysfs_cleanup();
-
        return err;
 }
 
-- 
2.15.0