[PATCH] pci: fix __pci_register_driver error handling

[Akinobu Mita <akinobu.mita@gmail.com>]

__pci_register_driver() error path forgot to unwind.
driver_unregister() needs to be called when pci_create_newid_file() failed.

Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>

 drivers/pci/pci-driver.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

Index: work-fault-inject/drivers/pci/pci-driver.c
===================================================================
--- work-fault-inject.orig/drivers/pci/pci-driver.c
+++ work-fault-inject/drivers/pci/pci-driver.c
@@ -445,9 +445,12 @@ int __pci_register_driver(struct pci_dri
 
 	/* register with core */
 	error = driver_register(&drv->driver);
+	if (error)
+		return error;
 
-	if (!error)
-		error = pci_create_newid_file(drv);
+	error = pci_create_newid_file(drv);
+	if (error)
+		driver_unregister(&drv->driver);
 
 	return error;
 }