For chips that do not use BMI, the epping enable process will break if the epping_enable() flow is returned when ol_ctx is NULL. This should not happen because ol_ctx is only used when BMI is enabled. Whenever ol_ctx is referred to, it will be checked for NULL before use, so we should not return error here. Change-Id: Ia873536a294b79f774193493646519163baf28c4 CRs-Fixed: 2901231