cpufreq: s5pv210: Use scope-based cleanup helper

Replace the manual cpufreq_cpu_put() with __free(put_cpufreq_policy)
annotation for policy references. This reduces the risk of reference
counting mistakes and aligns the code with the latest kernel style.

No functional change intended.

Signed-off-by: Zihuan Zhang <zhangzihuan@kylinos.cn>
[ Viresh: Minor changes ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

Author: Zihuan Zhang

drivers/cpufreq/s5pv210-cpufreq.c

@@ -554,17 +554,15 @@ static int s5pv210_cpu_init(struct cpufreq_policy *policy)
 static int s5pv210_cpufreq_reboot_notifier_event(struct notifier_block *this,
 						 unsigned long event, void *ptr)
 {
+	struct cpufreq_policy *policy __free(put_cpufreq_policy) = cpufreq_cpu_get(0);
 	int ret;
-	struct cpufreq_policy *policy;
 
-	policy = cpufreq_cpu_get(0);
 	if (!policy) {
 		pr_debug("cpufreq: get no policy for cpu0\n");
 		return NOTIFY_BAD;
 	}
 
 	ret = cpufreq_driver_target(policy, SLEEP_FREQ, 0);
-	cpufreq_cpu_put(policy);
 
 	if (ret < 0)
 		return NOTIFY_BAD;