_nbd_fini will make all NBDs into closing state.
remove _nbd_async, beasue it will call asynchronous error.
Signed-off-by: MengjinWu <mengjin.wu@intel.com>
Change-Id: Ifb873b7f079b735983bdf20c2df652be0a21919f
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/8035
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Ziye Yang <ziye.yang@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
ab5cc9dd6e