vfio/migration: Fix wrong enum usage

vfio/migration: Fix wrong enum usage

vfio_migration_init() initializes VFIOMigration->device_state using enum
of VFIO migration protocol v2. Current implemented protocol is v1 so v1
enum should be used. Fix it.

Fixes: 429c72800654 ("vfio/migration: Fix incorrect initialization value for parameters in VFIOMigration")
Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Zhang Chen <chen.zhang@intel.com>
Link: https://lore.kernel.org/r/20221016085752.32740-1-avihaih@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>