[PATCH] usb: dwc3: gadget: use explicit 0 for success in __dwc3_gadget_kick_transfer()

Smatch warns that __dwc3_gadget_kick_transfer() might be missing an
error code when returning 'ret' at line 1691.

While 'ret' is guaranteed to be 0 at this point, returning an explicit 0
improves readability by removing a level of indirection and clarifies
the intent that this is a successful "no-op" path. This change also
silences the Smatch warning.

Suggested-by: Dan Carpenter <[email protected]>
Signed-off-by: Zeeshan Ahmad <[email protected]>
---
Link: https://lore.kernel.org/linux-usb/CAPBWGpEi77+sksNLazw=dtyA3d6fBn-r10917k1rEzwzT3M=gA@mail.gmail.com/T/#t

 drivers/usb/dwc3/gadget.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 0a688904ce8c..3d4ca68e584c 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1688,7 +1688,7 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep)
 	 * transfer, there's no need to update the transfer.
 	 */
 	if (!ret && !starting)
-		return ret;
+		return 0;
 
 	req = next_request(&dep->started_list);
 	if (!req) {
-- 
2.43.0