usb: typec: fix pm usage counter imbalance in ucsi_ccg_sync_control()

The error handling for the case `con_index == 0` should involve dropping
the pm usage counter, as ucsi_ccg_sync_control() gets it at the
beginning. Fix it.

Cc: stable <[email protected]>
Fixes: e56aac6 ("usb: typec: fix potential array underflow in ucsi_ccg_sync_control()")
Signed-off-by: GONG Ruiqi <[email protected]>
Reviewed-by: Dan Carpenter <[email protected]>
Reviewed-by: Heikki Krogerus <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: GONG Ruiqi

drivers/usb/typec/ucsi/ucsi_ccg.c

@@ -646,16 +646,16 @@ static int ucsi_ccg_sync_control(struct ucsi *ucsi, u64 command)
 			UCSI_CMD_CONNECTOR_MASK;
 		if (con_index == 0) {
 			ret = -EINVAL;
-			goto unlock;
+			goto err_put;
 		}
 		con = &uc->ucsi->connector[con_index - 1];
 		ucsi_ccg_update_set_new_cam_cmd(uc, con, &command);
 	}
 
 	ret = ucsi_sync_control_common(ucsi, command);
 
+err_put:
 	pm_runtime_put_sync(uc->dev);
-unlock:
 	mutex_unlock(&uc->lock);
 
 	return ret;