Revert "driver core: refcounting fix"

This reverts commit 63ce18cfe685115ff8d341bae4c9204a79043cf0.

It was the incorrect fix and causes a reference counting bug whenever
any driver module is removed from the system. Mike Galbraith
<[e-mail]> is looking for the real fix for his problem.

Signed-off-by: Greg Kroah-Hartman <[e-mail]>

kernel/module.c

···
 			kfree(driver_name);
 		}
 	}
-	/*
-	 * Undo the additional reference we added in module_add_driver()
-	 * via kset_find_obj()
-	 */
-	if (drv->mod_name)
-		kobject_put(&drv->kobj);
 }
 EXPORT_SYMBOL(module_remove_driver);
 #endif