Stopping an already disabled vport leads to firmware assert. Stop the vport only if it was started. Fixes: 2ea6f76aff40 ("qede: add core driver") Cc: stable@dpdk.org Signed-off-by: Manish Chopra <manishc@marvell.com> Signed-off-by: Rasesh Mody <rmody@marvell.com>