usb: dwc3: gadget: Return success always for kick transfer in ep queue

If an error is received when issuing a start or update transfer command, the error handler will stop all active requests (including the current USB request), and call dwc3_gadget_giveback() to notify function drivers of the requests which have been stopped. Avoid returning an error for kick transfer during EP queue, to remove duplicate cleanup operations on the request being queued.

---
Changes in v2:
- Added Fixes tag and Cc'ed stable

Changes in v1:
- Renamed commit title due to new implementation
- Return success always for kick transfer during ep queue

Previous patchset:
https://lore.kernel.org/linux-usb/[email protected]/T/#t

 drivers/usb/dwc3/gadget.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

index dd80e5c..a5b7fd9 100644
@@ -1684,7 +1684,9 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
 		}
 	}
 
-	return __dwc3_gadget_kick_transfer(dep);
+	__dwc3_gadget_kick_transfer(dep);
+
+	return 0;
 }
 
 static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request,

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Wrong format here, should be:

Other than that:

balbi