realtek: r8169: use module_pci_driver macro

use the module_pci_driver macro to make the code simpler
by eliminating the module_init and module_exit calls

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/realtek/r8169.c

@@ -7023,15 +7023,4 @@ static struct pci_driver rtl8169_pci_driver = {
 	.driver.pm	= RTL8169_PM_OPS,
 };
 
-static int __init rtl8169_init_module(void)
-{
-	return pci_register_driver(&rtl8169_pci_driver);
-}
-
-static void __exit rtl8169_cleanup_module(void)
-{
-	pci_unregister_driver(&rtl8169_pci_driver);
-}
-
-module_init(rtl8169_init_module);
-module_exit(rtl8169_cleanup_module);
+module_pci_driver(rtl8169_pci_driver);