cpufreq: mvebu: Free opp if registering failed

Since the introduction of this driver, the functions to remove the opp
were added. So stop claiming we can't remove opp and use one of them in
case of failure.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/mvebu-cpufreq.c

@@ -76,12 +76,6 @@ static int __init armada_xp_pmsu_cpufreq_init(void)
 			return PTR_ERR(clk);
 		}
 
-		/*
-		 * In case of a failure of dev_pm_opp_add(), we don't
-		 * bother with cleaning up the registered OPP (there's
-		 * no function to do so), and simply cancel the
-		 * registration of the cpufreq device.
-		 */
 		ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk), 0);
 		if (ret) {
 			clk_put(clk);
@@ -91,7 +85,8 @@ static int __init armada_xp_pmsu_cpufreq_init(void)
 		ret = dev_pm_opp_add(cpu_dev, clk_get_rate(clk) / 2, 0);
 		if (ret) {
 			clk_put(clk);
-			return ret;
+			dev_err(cpu_dev, "Failed to register OPPs\n");
+			goto opp_register_failed;
 		}
 
 		ret = dev_pm_opp_set_sharing_cpus(cpu_dev,
@@ -104,5 +99,11 @@ static int __init armada_xp_pmsu_cpufreq_init(void)
 
 	platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
 	return 0;
+
+opp_register_failed:
+	/* As registering has failed remove all the opp for all cpus */
+	dev_pm_opp_cpumask_remove_table(cpu_possible_mask);
+
+	return ret;
 }
 device_initcall(armada_xp_pmsu_cpufreq_init);