[PATCH -next] staging: rtl8712: fix double lock bug in SetPSModeWorkItemCallback()

[Wei Yongjun]

From: Wei Yongjun <weiyongj...@huawei.com>

Fix a double lock bug in SetPSModeWorkItemCallback().

Fixes: 5c2ba8b85e35 ("rtl8712: pwrctrl_priv: Replace semaphore lock
with mutex")
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/staging/rtl8712/rtl871x_pwrctrl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/rtl8712/rtl871x_pwrctrl.c 
b/drivers/staging/rtl8712/rtl871x_pwrctrl.c
index 8f82d85..d464c13 100644
--- a/drivers/staging/rtl8712/rtl871x_pwrctrl.c
+++ b/drivers/staging/rtl8712/rtl871x_pwrctrl.c
@@ -145,7 +145,7 @@ static void SetPSModeWorkItemCallback(struct work_struct 
*work)
                mutex_lock(&pwrpriv->mutex_lock);
                if (pwrpriv->pwr_mode == PS_MODE_ACTIVE)
                        r8712_set_rpwm(padapter, PS_STATE_S4);
-               mutex_lock(&pwrpriv->mutex_lock);
+               mutex_unlock(&pwrpriv->mutex_lock);
        }
 }