After removing rte_eth_devices from testpmd the vm_hotplug no longer
recovered after removal of a device, because the port was closed
before querying it.
Fixes: 0a0821bcf3 ("app/testpmd: remove most uses of internal ethdev array")
Signed-off-by: Paulis Gributs <paulis.gributs@intel.com>
Acked-by: Xiaoyun Li <xiaoyun.li@intel.com>