vhost-vdpa: Call ida_simple_remove() when failed

In function vhost_vdpa_probe(), when code execution fails, we should
call ida_simple_remove() to free ida.

Signed-off-by: Bo Liu <liubo03@inspur.com>
Message-Id: <20220805091254.20026-1-liubo03@inspur.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>