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: cc1ec769 ("RDMA/bnxt_re: Fixing the Control path command and response handling")
Fixes: 65288a22 ("RDMA/bnxt_re: use shadow qd while posting non blocking rcfw command")
Link: https://patch.msgid.link/r/1728373302-19530-5-git-send-email-selvin.xavier@broadcom.com


Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>