RDMA/hns: Fix assignment to ba_pg_sz of eqe

When allocating eq buffer, the size of base address page should be defined
by eqe_ba_pg_sz instead of srqwqe_ba_pg_sz.

Fixes: 477a0a38 ("RDMA/hns: Optimize 0 hop addressing for EQE buffer")
Link: https://lore.kernel.org/r/1588931159-56875-4-git-send-email-liweihang@huawei.com


Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>