staging/rdma/hfi1: Turning off LED without checking if stepping is Ax

It prevents the LED from staying on when the QSFP module is
not present.

Reviewed-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>