Two bugfixes in post_send flow:
libhns: Fix out-of-order issue of requester when setting FENCE
libhns: Fix reference to uninitialized cq pointer
Signed-off-by: Xinghai Cen <cenxinghai@h-partners.com>
(cherry picked from commit 4793d5d71084589b70422fc241883aef0784e847)
