ixgbe: fix registration order of driver and DCA nofitication

ixgbe_notify_dca cannot be called before driver registration
because it expects driver's klist_devices to be allocated and
initialized. While on it make sure debugfs files are removed
when registration fails.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Jakub Kicinski <jakub.kicinski@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index db5611ae407e..79f4a26ea6cc 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -7922,12 +7922,19 @@ static int __init ixgbe_init_module(void)
         ixgbe_dbg_init();
 #endif /* CONFIG_DEBUG_FS */
 
+        ret = pci_register_driver(&ixgbe_driver);
+        if (ret) {
+#ifdef CONFIG_DEBUG_FS
+                ixgbe_dbg_exit();
+#endif /* CONFIG_DEBUG_FS */
+                return ret;
+        }
+
 #ifdef CONFIG_IXGBE_DCA
         dca_register_notify(&dca_notifier);
 #endif
 
-        ret = pci_register_driver(&ixgbe_driver);
-        return ret;
+        return 0;
 }
 
 module_init(ixgbe_init_module);