How can a RLS algorithm utilise Wiener filter as FIR (M-tap) block?
Please see link here on how to implement the Wiener Filter and a simple explanation of its operation in terms of deconvolution (described as an LMS filter using the Wiener-Hopf equations, but is a Wiener Filter implementation. It should be noted that the true Wiener filter is an MMSE solution which the LMS solution will converge to).  

Compensating Loudspeaker frequency response in an audio signal