V4L/DVB: IR/imon: use the proper ir-core device unregister function

Was using input_unregister_device directly, instead of using
ir_input_unregister, which tears down a bunch of other things in
addition to eventually calling input_unregister_device.

Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/IR/imon.c b/drivers/media/IR/imon.c
index 4bbd45f..d13a79e 100644
--- a/drivers/media/IR/imon.c
+++ b/drivers/media/IR/imon.c
@@ -1943,7 +1943,7 @@
 	return ictx;
 
 urb_submit_failed:
-	input_unregister_device(ictx->idev);
+	ir_input_unregister(ictx->idev);
 	input_free_device(ictx->idev);
 idev_setup_failed:
 find_endpoint_failed:
@@ -2306,7 +2306,7 @@
 	if (ifnum == 0) {
 		ictx->dev_present_intf0 = false;
 		usb_kill_urb(ictx->rx_urb_intf0);
-		input_unregister_device(ictx->idev);
+		ir_input_unregister(ictx->idev);
 		if (ictx->display_supported) {
 			if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
 				usb_deregister_dev(interface, &imon_lcd_class);