RDMA/bnxt_re: Fix the max WQEs used in Static WQE mode

RDMA/bnxt_re: Fix the max WQEs used in Static WQE mode

max_sw_wqe used for static wqe mode should be same as the max_wqe.
Calculate the max_sw_wqe only for the variable WQE mode.

Fixes: de1d364c3815 ("RDMA/bnxt_re: Add support for Variable WQE in Genp7 adapters")
Link: https://patch.msgid.link/r/1726715161-18941-7-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>