RDMA/erdma: Fix incorrect response returned from query_qp

The erdma_post_cmd_wait() function returns the cmdq response
only when both resp0 and resp1 are not NULL.

Reviewed-by: Cheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: Boshi Yu <boshiyu@linux.alibaba.com>
Link: https://patch.msgid.link/20241226084141.74823-3-boshiyu@linux.alibaba.com


Signed-off-by: Leon Romanovsky <leon@kernel.org>