staging: mei: reordering the exit module cleanup

keeping the exit flow in a reverse order then the init flow.

Signed-off-by: Oren Weil <[e-mail]>
Acked-by: Tomas Winkler <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/mei/main.c

···
  */
 static void __exit mei_exit_module(void)
 {
-	pci_unregister_driver(&mei_driver);
 	mei_sysfs_device_remove();
 	mei_unregister_cdev();
+	pci_unregister_driver(&mei_driver);
 
 	pr_debug("mei: Driver unloaded successfully.\n");
 }