usb: renesas_usbhs: gadget: fix giveback status code in usbhsg_pipe_disable()

A udc driver should set the giveback status to -ESHUTDOWN in
usb_ep_disable(). Otherwise, a gadget driver (e.g. g_serial) might
request next data wrongly and it is possible to cause kernel panic.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

drivers/usb/renesas_usbhs/mod_gadget.c

@@ -561,7 +561,7 @@ static int usbhsg_pipe_disable(struct usbhsg_uep *uep)
 		if (!pkt)
 			break;
 
-		usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ECONNRESET);
+		usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ESHUTDOWN);
 	}
 
 	usbhs_pipe_disable(pipe);