IB/nes: Fix incorrect type in assignment

Fix mismatch between types, wqe_words are in le32 format, while opcode
in CPU format.

The following sparse warnings are helped to find it:

drivers/infiniband/hw/nes/nes_hw.c:3058:24: warning: incorrect type in assignment (different base types)
drivers/infiniband/hw/nes/nes_hw.c:3058:24:    expected unsigned int [unsigned] [assigned] [usertype] opcode
drivers/infiniband/hw/nes/nes_hw.c:3058:24:    got restricted __le32 <noident>

CC: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/nes/nes_hw.c

@@ -3055,7 +3055,7 @@ static void nes_cqp_ce_handler(struct nes_device *nesdev, struct nes_hw_cq *cq)
 		memcpy(cqp_wqe, &cqp_request->cqp_wqe, sizeof(*cqp_wqe));
 		barrier();
 
-		opcode = cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX];
+		opcode = le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]);
 		if ((opcode & NES_CQP_OPCODE_MASK) == NES_CQP_DOWNLOAD_SEGMENT)
 			ctx_index = NES_CQP_WQE_DL_COMP_CTX_LOW_IDX;
 		else