clk: visconti: Fix memory leak in visconti_register_pll()

[ Upstream commit b55226f8553d255f5002c751c7c6ba9291f34bf2 ]

@pll->rate_table has allocated memory by kmemdup(), if clk_hw_register()
fails, it should be freed, otherwise it will cause memory leak issue,
this patch fixes it.

Fixes: b4cbe606dc36 ("clk: visconti: Add support common clock driver and reset driver")
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Link: https://lore.kernel.org/r/20221122152353.204132-1-xiujianfeng@huawei.com
Acked-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/clk/visconti/pll.c b/drivers/clk/visconti/pll.c
index a484cb9..1f3234f 100644 (file)
--- a/drivers/clk/visconti/pll.c
+++ b/drivers/clk/visconti/pll.c
@@ -277,6 +277,7 @@ static struct clk_hw *visconti_register_pll(struct visconti_pll_provider *ctx,
        ret = clk_hw_register(NULL, &pll->hw);
        if (ret) {
                pr_err("failed to register pll clock %s : %d\n", name, ret);
+               kfree(pll->rate_table);
                kfree(pll);
                pll_hw_clk = ERR_PTR(ret);
        }