I'm having the same\similar problem. See thread I've just created:
https://lists.ovirt.org/archives/list/users@ovirt.org/thread/J65PSDSA2HR4...
After the setup process fails, you should be able to browse to the oVirt webui
https://<host>:6900, you'll see your host is in state "unassigned".
You'll also be able to browse to your host UI: https://<host>:9090 and access
the engine VM console. Does it have an IP on the 192.168 range or your main bridge
network range?
I've read reports that others have had success within the oVirt webui
(https://<host>:6900):
Compute – Hosts – Click on your Host and then click the Network Interfaces tab and “Setup
Host Networks” button. Add the ovirtmgmt management network to the appropriate
interface.
But this didn't work for me (errored when trying to save change). Pls report back how
you get on.