[CPUFREQ] kzalloc conversions for cpufreq core.

Signed-off-by: Dave Jones <davej@redhat.com>
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 109d62c..cfe1d0a 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -595,12 +595,11 @@
 		goto module_out;
 	}
 
-	policy = kmalloc(sizeof(struct cpufreq_policy), GFP_KERNEL);
+	policy = kzalloc(sizeof(struct cpufreq_policy), GFP_KERNEL);
 	if (!policy) {
 		ret = -ENOMEM;
 		goto nomem_out;
 	}
-	memset(policy, 0, sizeof(struct cpufreq_policy));
 
 	policy->cpu = cpu;
 	policy->cpus = cpumask_of_cpu(cpu);