USB: input: joystick: iforce: fix up dev_err() usages

We should always reference the input device for dev_err(), not the USB
device.  Fix up the places where I got this wrong.
Reported-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/input/joystick/iforce/iforce-packets.c

@@ -257,7 +257,7 @@ int iforce_get_id_packet(struct iforce *iforce, char *packet)
 
 		status = usb_submit_urb(iforce->ctrl, GFP_ATOMIC);
 		if (status) {
-			dev_err(&iforce->usbdev->dev,
+			dev_err(&iforce->dev->dev,
 				"usb_submit_urb failed %d\n", status);
 			return -1;
 		}

drivers/input/joystick/iforce/iforce-usb.c

@@ -100,7 +100,7 @@ static void iforce_usb_irq(struct urb *urb)
 exit:
 	status = usb_submit_urb (urb, GFP_ATOMIC);
 	if (status)
-		dev_err(&iforce->usbdev->dev,
+		dev_err(&iforce->dev->dev,
 			"%s - usb_submit_urb failed with result %d\n",
 			__func__, status);
 }