CVE-2022-50449 clk: samsung: Fix memory leak in _samsung_clk_register_pll()

In the Linux kernel, the following vulnerability has been resolved: clk: samsung: Fix memory leak in samsungclkregisterpll If clkregister fails, @pll-ratetable may have allocated memory by kmemdup, so it needs to be freed, otherwise will cause memory leak issue, this patch fixes it...