clk: samsung: Fix memory leak in _samsung_clk_register_pll()

[ Upstream commit 5174e5b0d1b669a489524192b6adcbb3c54ebc72 ]

If clk_register() fails, @pll->rate_table may have allocated memory by
kmemdup(), so it needs to be freed, otherwise will cause memory leak
issue, this patch fixes it.

Fixes: de1bc0c26dae ("clk: samsung: Add support to register rate_table for samsung plls")
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Link: https://lore.kernel.org/r/20221123032015.63980-1-xiujianfeng@huawei.com
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/clk/samsung/clk-pll.c b/drivers/clk/samsung/clk-pll.c
index ac70ad785d8edde1ac0bb381815a1ed3ed7aaa19..33df20f813d595476eb365f6cd0cf4da81897c2a 100644 (file)
--- a/drivers/clk/samsung/clk-pll.c
+++ b/drivers/clk/samsung/clk-pll.c
@@ -1390,6 +1390,7 @@ static void __init _samsung_clk_register_pll(struct samsung_clk_provider *ctx,
        if (ret) {
                pr_err("%s: failed to register pll clock %s : %d\n",
                        __func__, pll_clk->name, ret);
+               kfree(pll->rate_table);
                kfree(pll);
                return;
        }