mei: wd: simplify wd_send command

Add reduce credits to wd_send to remove code
repetition and simplify error handling

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index 31cb345..834220a 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -480,10 +480,9 @@
 	if (mei_cl_is_connected(&dev->wd_cl)) {
 		if (dev->wd_pending &&
 		    mei_cl_flow_ctrl_creds(&dev->wd_cl) > 0) {
-			if (mei_wd_send(dev))
-				dev_dbg(&dev->pdev->dev, "wd send failed.\n");
-			else if (mei_cl_flow_ctrl_reduce(&dev->wd_cl))
-				return -EIO;
+			ret = mei_wd_send(dev);
+			if (ret)
+				return ret;
 			dev->wd_pending = false;
 		}
 	}