usb: dwc3: gadget: use Update Transfer from Xfer In Progress

Instead of limiting __dwc3_gadget_kick_transfer() to
Xfer Complete, we can try to issue Update Transfer
command from Xfer In Progress too.
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc3/gadget.c

@@ -1968,10 +1968,10 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc,
 		dwc->u1u2 = 0;
 	}
 
-	if (is_xfer_complete && !usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
+	if (!usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
 		int ret;
 
-		ret = __dwc3_gadget_kick_transfer(dep, 0, 1);
+		ret = __dwc3_gadget_kick_transfer(dep, 0, is_xfer_complete);
 		if (!ret || ret == -EBUSY)
 			return;
 	}