Unfortunately we managed to not catch in our automatic testing this
oversight during the porting of the corresponding pv-ops patch
(info->irq now getting set later, which doesn't matter for pv-ops as
that has the event channel at hand).

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>

--- a/drivers/xen/fbfront/xenfb.c
+++ b/drivers/xen/fbfront/xenfb.c
@@ -757,7 +757,7 @@ static int xenfb_connect_backend(struct 
 	if (ret)
 		goto error_xenbus;
 	ret = xenbus_printf(xbt, dev->nodename, "event-channel", "%u",
-			    irq_to_evtchn_port(info->irq));
+			    irq_to_evtchn_port(irq));
 	if (ret)
 		goto error_xenbus;
 	ret = xenbus_printf(xbt, dev->nodename, "protocol", "%s",