recoverd: Move code to ban other nodes after we get local node flags

recoverd: Move code to ban other nodes after we get local node flags

If a node gets banned first, then it should not ban other nodes.

This code was moved up in main_loop to avoid waiting for nodemap
from other nodes (commit 83b0261f2cb453195b86f547d360400103a8b795).

To prevent a banned node from banning other nodes, we need to first get
nodemap information from local node, so trying to ban other nodes can
fail if we are already banned.

Signed-off-by: Amitay Isaacs <amitay@gmail.com>