zorro: Fix device_register() error handling

If device_register() fails then call put_device().
See comment to device_register.

Signed-off-by: Vasiliy Kulikov <[e-mail]>
Signed-off-by: Geert Uytterhoeven <[e-mail]>

drivers/zorro/zorro.c

···
 	error = device_register(&bus->dev);
 	if (error) {
 		pr_err("Zorro: Error registering zorro_bus\n");
+		put_device(&bus->dev);
 		kfree(bus);
 		return error;
 	}
···
 		if (error) {
 			dev_err(&bus->dev, "Error registering device %s\n",
 				z->name);
+			put_device(&z->dev);
 			continue;
 		}
 		error = zorro_create_sysfs_dev_files(z);