[PATCH AUTOSEL 5.4 166/350] regulator: core: Release coupled_rdevs on regulator_init_coupling() error

[Sasha Levin <sashal@xxxxxxxxxx>]

From: Dmitry Osipenko <digetx@xxxxxxxxx>

[ Upstream commit 26c2c997aa1a6c5522f6619910ba025e53e69763 ]

This patch fixes memory leak which should happen if regulator's coupling
fails to initialize.

Fixes: d8ca7d184b33 ("regulator: core: Introduce API for regulators coupling customization")
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
Link: https://lore.kernel.org/r/20191025002240.25288-1-digetx@xxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/regulator/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index a46be221dbdcb..51ce280c1ce13 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -5198,6 +5198,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
 	regulator_remove_coupling(rdev);
 	mutex_unlock(&regulator_list_mutex);
 wash:
+	kfree(rdev->coupling_desc.coupled_rdevs);
 	kfree(rdev->constraints);
 	mutex_lock(&regulator_list_mutex);
 	regulator_ena_gpio_free(rdev);
-- 
2.20.1