cpufreq: tegra20: Remove unneeded variable initialization

Remove unneeded variable initialization solely for consistency.
Signed-off-by: NDmitry Osipenko <digetx@gmail.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/tegra20-cpufreq.c

@@ -86,7 +86,7 @@ static int tegra_target(struct cpufreq_policy *policy, unsigned int index)
 {
 	unsigned long rate = freq_table[index].frequency;
 	unsigned int ifreq = clk_get_rate(pll_p_clk) / 1000;
-	int ret = 0;
+	int ret;
 
 	/*
 	 * target freq == pll_p, don't need to take extra reference to pll_x_clk