power: supply: ab8500_charger: Fix an error handling path

[ Upstream commit bf59fddde1c3eab89eb8dca8f3d3dc097887d2bb ]

'ret' is know to be 0 at this point, because it has not been updated by the
the previous call to 'abx500_mask_and_set_register_interruptible()'.

Fix it by updating 'ret' before checking if an error occurred.

Fixes: 84edbeeab67c ("ab8500-charger: AB8500 charger driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/power/supply/ab8500_charger.c b/drivers/power/supply/ab8500_charger.c
index 4ebbcce..1cdbe7a 100644 (file)
--- a/drivers/power/supply/ab8500_charger.c
+++ b/drivers/power/supply/ab8500_charger.c
@@ -3218,7 +3218,7 @@ static int ab8500_charger_init_hw_registers(struct ab8500_charger *di)
        }
 
        /* Enable backup battery charging */
-       abx500_mask_and_set_register_interruptible(di->dev,
+       ret = abx500_mask_and_set_register_interruptible(di->dev,
                AB8500_RTC, AB8500_RTC_CTRL_REG,
                RTC_BUP_CH_ENA, RTC_BUP_CH_ENA);
        if (ret < 0)