RDMA/bnxt_re: Fix the locking while accessing the QP table

JIRA: https://issues.redhat.com/browse/RHEL-74367

commit 9272cba
Author: Selvin Xavier <selvin.xavier@broadcom.com>
Date:   Tue Dec 17 15:56:49 2024 +0530

    RDMA/bnxt_re: Fix the locking while accessing the QP table

    QP table handling is synchronized with destroy QP and Async
    event from the HW. The same needs to be synchronized
    during create_qp also. Use the same lock in create_qp also.

    Fixes: 76d3ddf ("RDMA/bnxt_re: synchronize the qp-handle table array")
    Fixes: f218d67 ("RDMA/bnxt_re: Allow posting when QPs are in error")
    Fixes: 84cf229 ("RDMA/bnxt_re: Fix the qp table indexing")
    Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
    Link: https://patch.msgid.link/20241217102649.1377704-6-kalesh-anakkur.purayil@broadcom.com
    Signed-off-by: Leon Romanovsky <leon@kernel.org>

Signed-off-by: Mohammad Heib <mheib@redhat.com>

Author: mohammadheib

drivers/infiniband/hw/bnxt_re/qplib_fp.c

@@ -1175,9 +1175,11 @@ int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
 		rq->dbinfo.db = qp->dpi->dbr;
 		rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
 	}
+	spin_lock_bh(&rcfw->tbl_lock);
 	tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
 	rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
 	rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
+	spin_unlock_bh(&rcfw->tbl_lock);
 
 	return 0;
 fail: