regulator: core: fix module refcount leak in set_supply()

[ Upstream commit da46ee19cbd8344d6860816b4827a7ce95764867 ]

If create_regulator() fails in set_supply(), the module refcount
needs be put to keep refcount balanced.

Fixes: e2c09ae7a74d ("regulator: core: Increase refcount for regulator supply's module")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221201122706.4055992-2-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 6590089..ab93deb 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1577,6 +1577,7 @@ static int set_supply(struct regulator_dev *rdev,
 
        rdev->supply = create_regulator(supply_rdev, &rdev->dev, "SUPPLY");
        if (rdev->supply == NULL) {
+               module_put(supply_rdev->owner);
                err = -ENOMEM;
                return err;
        }