[CPUFREQ] Bugfix: Call driver exit in cpufreq_add_dev error path

A minor fix for cpufreq_add_dev() error path. We need to call driver->exit()
if driver_init() call has succeeded.

Signed-off-by: Venkatesh Pallipadi <[e-mail]>
Signed-off-by: Dave Jones <[e-mail]>

drivers/cpufreq/cpufreq.c

···
 
 	ret = kobject_register(&policy->kobj);
 	if (ret)
-		goto err_out;
+		goto err_out_driver_exit;
 
 	/* set up files for this cpu device */
 	drv_attr = cpufreq_driver->attr;
···
 
 	kobject_unregister(&policy->kobj);
 	wait_for_completion(&policy->kobj_unregister);
+
+err_out_driver_exit:
+	if (cpufreq_driver->exit)
+		cpufreq_driver->exit(policy);
 
 err_out:
 	kfree(policy);