pinctrl: sunxi: drop lock on error path

I forgot to drop the lock for the return inside the loop
protected by the spinlock in the pin config routine when
merging in -rc7 in commit 6ad30ce046aefbdc3848232c665a728860d7bb68

Reported-by: Sherman Yin <syin@broadcom.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/pinctrl/pinctrl-sunxi.c b/drivers/pinctrl/pinctrl-sunxi.c
index 532202bbfc33..4432e5e062c5 100644
--- a/drivers/pinctrl/pinctrl-sunxi.c
+++ b/drivers/pinctrl/pinctrl-sunxi.c
@@ -291,8 +291,10 @@ static int sunxi_pconf_group_set(struct pinctrl_dev *pctldev,
                 switch (pinconf_to_config_param(configs[i])) {
                 case PIN_CONFIG_DRIVE_STRENGTH:
                         strength = pinconf_to_config_argument(configs[i]);
-                        if (strength > 40)
+                        if (strength > 40) {
+                                spin_unlock_irqrestore(&pctl->lock, flags);
                                 return -EINVAL;
+                        }
                         /*
                          * We convert from mA to what the register expects:
                          *   0: 10mA