RDMA/vmw_pvrdma: Remove unnecessary check on wr->opcode

wr->opcode is unsigned; checking if it is negative is unnecessary. Fix
this issue by removing the check.

Fixes: 29c8d9eb ("IB: Add vmw_pvrdma driver")
Link: https://lore.kernel.org/r/20230605183728.47021-1-bryantan@vmware.comReported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/07c48eee-0aca-48ee-897a-38588c341c41@kili.mountainSigned-off-by: Bryan Tan <bryantan@vmware.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/vmw_pvrdma/pvrdma_qp.c

@@ -709,14 +709,6 @@ int pvrdma_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
 			goto out;
 		}
 
-		if (unlikely(wr->opcode < 0)) {
-			dev_warn_ratelimited(&dev->pdev->dev,
-					     "invalid send opcode\n");
-			*bad_wr = wr;
-			ret = -EINVAL;
-			goto out;
-		}
-
 		/*
 		 * Only support UD, RC.
 		 * Need to check opcode table for thorough checking.