tests/migration-test: Wait for cancellation sooner in multifd cancel

The source QEMU might not finish the cancellation of the migration
before we start setting up the next attempt. During the setup, the
test_migrate_start() function and others might need to interact with the
source in a way that is not possible unless the migration is fully
canceled. For example, setting capabilities when the migration is still
running leads to an error.

By moving the wait before the setup, we ensure this does not happen.

Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Juraj Marcin <jmarcin@redhat.com>
Link: https://lore.kernel.org/r/20240920161319.2337625-1-jmarcin@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
1 file changed