RDMA/erdma: Fix opcode conditional check

Fix conditional if else check by checking with wr->opcode.
The indicated dead code may have performed some action; that
action will never occur as op is pre-assigned a different value.

Fixes: 999a0a2 ("RDMA/erdma: Support UD QPs and UD WRs")
Signed-off-by: Advait Dhamorikar <advaitdhamorikar@gmail.com>
Link: https://patch.msgid.link/20241219043939.10344-1-advaitdhamorikar@gmail.com
Reviewed-by: Cheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

Author: advait-0

drivers/infiniband/hw/erdma/erdma_qp.c

@@ -406,7 +406,7 @@ static void init_send_sqe_rc(struct erdma_qp *qp, struct erdma_send_sqe_rc *sqe,
 	if (wr->opcode == IB_WR_SEND_WITH_IMM) {
 		op = ERDMA_OP_SEND_WITH_IMM;
 		sqe->imm_data = wr->ex.imm_data;
-	} else if (op == IB_WR_SEND_WITH_INV) {
+	} else if (wr->opcode == IB_WR_SEND_WITH_INV) {
 		op = ERDMA_OP_SEND_WITH_INV;
 		sqe->invalid_stag = cpu_to_le32(wr->ex.invalidate_rkey);
 	}