CPUFREQ: Loongson1: Replace kzalloc() with kcalloc()

This patch replaces kzalloc() with kcalloc() when allocating
frequency table, and remove unnecessary 'out of memory' message.
Signed-off-by: NKelvin Cheung <keguang.zhang@gmail.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: linux-pm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13053/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

drivers/cpufreq/loongson1-cpufreq.c

@@ -81,13 +81,9 @@ static int ls1x_cpufreq_init(struct cpufreq_policy *policy)
 	pll_freq = clk_get_rate(ls1x_cpufreq.pll_clk) / 1000;
 
 	steps = 1 << DIV_CPU_WIDTH;
-	freq_tbl = kzalloc(sizeof(*freq_tbl) * steps, GFP_KERNEL);
-	if (!freq_tbl) {
-		dev_err(ls1x_cpufreq.dev,
-			"failed to alloc cpufreq_frequency_table\n");
-		ret = -ENOMEM;
-		goto out;
-	}
+	freq_tbl = kcalloc(steps, sizeof(*freq_tbl), GFP_KERNEL);
+	if (!freq_tbl)
+		return -ENOMEM;
 
 	for (i = 0; i < (steps - 1); i++) {
 		freq = pll_freq / (i + 1);
@@ -106,7 +102,7 @@ static int ls1x_cpufreq_init(struct cpufreq_policy *policy)
 	ret = cpufreq_generic_init(policy, freq_tbl, 0);
 	if (ret)
 		kfree(freq_tbl);
-out:
+
 	return ret;
 }