ice: fix an error code in ice_cfg_phy_fec()

Propagate the error code from ice_get_link_default_override() instead
of returning success.

Fixes: ea78ce4d

 ("ice: add link lenient and default override support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>