Ignoring connection errors

[EricDriussi]

I'm trying to migrate from Ansible and I can't figure out this part of the puzzle:

What I'm trying to achieve

Given a server with root ssh access, as a first step before provisioning, I want to set up a non-root sudo user.
This new user should be used to do the provisioning.

Subsequent runs should not produce errors when trying to do the first step (or the connection error should be ignored).

What seems to partially work

Simplified inventory.py:

servers = [
    ("sudo_user", {"ssh_user": "new_user", "ssh_hostname": "192.168.0.15"}),
    ("root_user", {"ssh_user": "root", "ssh_hostname": "192.168.0.15"}),
]

Simplified deploy.py:

user = host.get_fact(User)

if user == "root":
    logger.info("Set up new_user")
else:
    logger.info("Provision the server")

Issues

This setup produces a connection error on subsequent runs:

--> Connecting to hosts...
    [sudo_user] Connected
    [root_user] SSH error (No existing session)

---

Is there a way to maybe ignore that connection error?
Or maybe I'm approaching this the wrong way?