dashplayer: Handle Eos Error Propagation in Renderer

Handle usecase where first frame after audio decoder
creation is EOS frame.

Change-Id: I9bcbfd3930eb3961ce5b5bfa36d692812aa92e9f
CRs-Fixed: 625722
dashplayer: Return DashCodec FillBuffers properly on Error

- reply and return buffers to DashCodec
 if FeedMoreTSData reports error
   CRs-Fixed: 628092

Change-Id: I178f78b0863106ab1662e8adee8f29741f7ed65b