[PATCH 2/2] Bluetooth: Add proper cleanup path for bt_6lowpan_init()

[Johan Hedberg <johan.hedberg@gmail.com>]

From: Johan Hedberg <johan.hedberg@intel.com>

In case part of the bt_6lowpan_init() fails we should undo any
operations that succeeded before the failure. This patch add the
necessary cleanup path to the function.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---
 net/bluetooth/6lowpan.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index 524218aeea6f..6e3c208820b8 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -1457,9 +1457,20 @@ static int __init bt_6lowpan_init(void)
 
 	err = register_netdevice_notifier(&bt_6lowpan_dev_notifier);
 	if (err)
-		return err;
+		goto failed;
 
-	return hci_mgmt_chan_register(&bt_6lowpan_chan);
+	err = hci_mgmt_chan_register(&bt_6lowpan_chan);
+	if (err) {
+		unregister_netdevice_notifier(&bt_6lowpan_dev_notifier);
+		goto failed;
+	}
+
+	return 0;
+
+failed:
+	debugfs_remove(lowpan_enable_debugfs);
+	debugfs_remove(lowpan_control_debugfs);
+	return err;
 }
 
 static void __exit bt_6lowpan_exit(void)
-- 
2.1.0