scsi: initio: Use module_pci_driver() to simplify the code

Use the module_pci_driver() macro to make the code simpler by eliminating
module_init() and module_exit() calls.

Link: https://lore.kernel.org/r/20200917071045.1909320-1-liushixin2@huawei.comSigned-off-by: Liu Shixin <liushixin2@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/initio.c

@@ -2962,20 +2962,8 @@ static struct pci_driver initio_pci_driver = {
 	.probe		= initio_probe_one,
 	.remove		= initio_remove_one,
 };
-
-static int __init initio_init_driver(void)
-{
-	return pci_register_driver(&initio_pci_driver);
-}
-
-static void __exit initio_exit_driver(void)
-{
-	pci_unregister_driver(&initio_pci_driver);
-}
+module_pci_driver(initio_pci_driver);
 
 MODULE_DESCRIPTION("Initio INI-9X00U/UW SCSI device driver");
 MODULE_AUTHOR("Initio Corporation");
 MODULE_LICENSE("GPL");
-
-module_init(initio_init_driver);
-module_exit(initio_exit_driver);