ARM: OMAP2+: Fix memleak in omap2xxx_clkt_vps_init

If the clk_register fails, we should free hw before function returns to
prevent memleak.
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/clkt2xxx_virt_prcm_set.c

@@ -244,6 +244,12 @@ void omap2xxx_clkt_vps_init(void)
 	hw->hw.init = &init;
 
 	clk = clk_register(NULL, &hw->hw);
+	if (IS_ERR(clk)) {
+		printk(KERN_ERR "Failed to register clock\n");
+		kfree(hw);
+		return;
+	}
+
 	clkdev_create(clk, "cpufreq_ck", NULL);
 	return;
 cleanup: