[CPUFREQ] add error handling for cpufreq_register_governor() error

Add error handling for cpufreq_register_governor() error
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: cpufreq@lists.linux.org.uk
Signed-off-by: Dave Jones <davej@redhat.com>

drivers/cpufreq/cpufreq_ondemand.c

@@ -589,12 +589,18 @@ EXPORT_SYMBOL(cpufreq_gov_ondemand);
 
 static int __init cpufreq_gov_dbs_init(void)
 {
+	int err;
+
 	kondemand_wq = create_workqueue("kondemand");
 	if (!kondemand_wq) {
 		printk(KERN_ERR "Creation of kondemand failed\n");
 		return -EFAULT;
 	}
-	return cpufreq_register_governor(&cpufreq_gov_ondemand);
+	err = cpufreq_register_governor(&cpufreq_gov_ondemand);
+	if (err)
+		destroy_workqueue(kondemand_wq);
+
+	return err;
 }
 
 static void __exit cpufreq_gov_dbs_exit(void)