RDMA/irdma: Do not generate SW completions for NOPs

Currently, artificial SW completions are generated for NOP wqes which can
generate unexpected completions with wr_id = 0. Skip the generation of
artificial completions for NOPs.

Fixes: 81091d7 ("RDMA/irdma: Add SW mechanism to generate completions on error")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20230315145231.931-2-shiraz.saleem@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

Author: mustafakismail

drivers/infiniband/hw/irdma/utils.c

@@ -2595,7 +2595,10 @@ void irdma_generate_flush_completions(struct irdma_qp *iwqp)
 			/* remove the SQ WR by moving SQ tail*/
 			IRDMA_RING_SET_TAIL(*sq_ring,
 				sq_ring->tail + qp->sq_wrtrk_array[sq_ring->tail].quanta);
-
+			if (cmpl->cpi.op_type == IRDMAQP_OP_NOP) {
+				kfree(cmpl);
+				continue;
+			}
 			ibdev_dbg(iwqp->iwscq->ibcq.device,
 				  "DEV: %s: adding wr_id = 0x%llx SQ Completion to list qp_id=%d\n",
 				  __func__, cmpl->cpi.wr_id, qp->qp_id);