The post_recv only supports QP types of RC, GSI and UD.

Link: https://lore.kernel.org/r/1611997090-48820-13-git-send-email-liweihang@huawei.comSigned-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>