[PATCH] slimbus: ngd: Fix runtime PM leak in qcom_slim_ngd_xfer_msg_sync()

[Wentao Liang]

The successful transfer path returns 0 without dropping the runtime PM
usage counter taken by pm_runtime_get_sync().  The error paths all jump
to pm_put, which releases the reference, but a completed transfer keeps
it forever.

Fall through to pm_put on success so the reference is always released.

Fixes: 917809e2280bb ("slimbus: ngd: Add qcom SLIMBus NGD driver")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Wentao Liang <vulab@xxxxxxxxxxx>
---
 drivers/slimbus/qcom-ngd-ctrl.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
index 1ed6be6e85d2..be5640f45d7c 100644
--- a/drivers/slimbus/qcom-ngd-ctrl.c
+++ b/drivers/slimbus/qcom-ngd-ctrl.c
@@ -937,7 +937,6 @@ static int qcom_slim_ngd_xfer_msg_sync(struct slim_controller *ctrl,
 		ret = -ETIMEDOUT;
 		goto pm_put;
 	}
-	return 0;
 
 pm_put:
 	pm_runtime_put(ctrl->dev);
-- 
2.34.1