USB: gadget: Fix unused variable warning in ci13xxx_udc

Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c
index 03dff95..92498ae 100644
--- a/drivers/usb/gadget/ci13xxx_udc.c
+++ b/drivers/usb/gadget/ci13xxx_udc.c
@@ -1843,7 +1843,7 @@
 __acquires(mEp->lock)
 {
 	struct ci13xxx_req *mReq, *mReqTemp;
-	int retval;
+	int uninitialized_var(retval);
 
 	trace("%p", mEp);