RDMA/bnxt_re: Return more meaningful error

When the HWRM command fails, driver currently returns -EFAULT(Bad
address). This does not look correct.

Modified to return -EIO(I/O error).

Fixes: cc1ec76 ("RDMA/bnxt_re: Fixing the Control path command and response handling")
Fixes: 65288a2 ("RDMA/bnxt_re: use shadow qd while posting non blocking rcfw command")
Link: https://patch.msgid.link/r/[email protected]
Signed-off-by: Kalesh AP <[email protected]>
Signed-off-by: Selvin Xavier <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

Author: Kalesh AP

drivers/infiniband/hw/bnxt_re/qplib_rcfw.c

@@ -525,7 +525,7 @@ static int __bnxt_qplib_rcfw_send_message(struct bnxt_qplib_rcfw *rcfw,
 		/* failed with status */
 		dev_err(&rcfw->pdev->dev, "cmdq[%#x]=%#x status %#x\n",
 			cookie, opcode, evnt->status);
-		rc = -EFAULT;
+		rc = -EIO;
 	}
 
 	return rc;