thermal/drivers/mediatek/lvts_thermal: Fix a memory leak in an error handling path

[ Upstream commit ca93bf607a44c1f009283dac4af7df0d9ae5e357 ]

If devm_krealloc() fails, then 'efuse' is leaking.
So free it to avoid a leak.

Fixes: f5f633b18234 ("thermal/drivers/mediatek: Add the Low Voltage Thermal Sensor driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/481d345233862d58c3c305855a93d0dbc2bbae7e.1706431063.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c
index 98d9c80bd4c6279385efa97fea52b0a2651348ea..fd4bd650c77a6ae8a0deebb7d8cfb13415d9214e 100644 (file)
--- a/drivers/thermal/mediatek/lvts_thermal.c
+++ b/drivers/thermal/mediatek/lvts_thermal.c
@@ -719,8 +719,10 @@ static int lvts_calibration_read(struct device *dev, struct lvts_domain *lvts_td
 
                lvts_td->calib = devm_krealloc(dev, lvts_td->calib,
                                               lvts_td->calib_len + len, GFP_KERNEL);
-               if (!lvts_td->calib)
+               if (!lvts_td->calib) {
+                       kfree(efuse);
                        return -ENOMEM;
+               }
 
                memcpy(lvts_td->calib + lvts_td->calib_len, efuse, len);