[PATCH AUTOSEL 4.19 18/23] clk: hi3620: Fix memory leak in hi3620_mmc_clk_init()

[Sasha Levin <sashal@kernel.org>]

From: Kuan-Wei Chiu <visitorckw@gmail.com>

[ Upstream commit bfbea9e5667cfa9552c3d88f023386f017f6c308 ]

In cases where kcalloc() fails for the 'clk_data->clks' allocation, the
code path does not handle the failure gracefully, potentially leading
to a memory leak. This fix ensures proper cleanup by freeing the
allocated memory for 'clk_data' before returning.

Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Link: https://lore.kernel.org/r/20231210165040.3407545-1-visitorckw@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/clk/hisilicon/clk-hi3620.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/hisilicon/clk-hi3620.c b/drivers/clk/hisilicon/clk-hi3620.c
index 77072c7778b9..93b4d8933797 100644
--- a/drivers/clk/hisilicon/clk-hi3620.c
+++ b/drivers/clk/hisilicon/clk-hi3620.c
@@ -481,8 +481,10 @@ static void __init hi3620_mmc_clk_init(struct device_node *node)
 		return;
 
 	clk_data->clks = kcalloc(num, sizeof(*clk_data->clks), GFP_KERNEL);
-	if (!clk_data->clks)
+	if (!clk_data->clks) {
+		kfree(clk_data);
 		return;
+	}
 
 	for (i = 0; i < num; i++) {
 		struct hisi_mmc_clock *mmc_clk = &hi3620_mmc_clks[i];
-- 
2.43.0