A comprehensive, well-done FMEA can be considered one of the inputs (plus many other preparations sheets defined in the methodology) to decide the scope of a DRBFM but an FMEA is not required since the focus is based on the changes and interfaces.
When considering a thorough FMEA as one of the inputs (including various other prepared sheets), it can aid in defining the scope for a DRBFM. However, since the primary focus is on changes and interfaces, an FMEA may not be required.