ipc4: return ipc4 error status instead of posix error

[RanderWang]

Convert posix error to ipc4 error and return ipc4 error for
functions in ipc4 directory.

fixes#5737

[lgirdwood]

@tmleman@marcinszkudlinski fyi.

[lyakh]

also return 0 in ipc4_create_pipeline(), in ipc_comp_connect(), ipc_comp_disconnect() should be return IPC4_SUCCESS. Also a bit strange, that a static function process_dma_index() in that file returns POSIX error codes, although they're replaced with IPC4 codes later, so, it isn't really a bug

[lgirdwood]

also return 0 in ipc4_create_pipeline(), in ipc_comp_connect(), ipc_comp_disconnect() should be return IPC4_SUCCESS. Also a bit strange, that a static function process_dma_index() in that file returns POSIX error codes, although they're replaced with IPC4 codes later, so, it isn't really a bug

@RanderWang can you make this a new PR to align these other functions with correct IPC4 return codes.

[RanderWang]

@lgirdwood@lyakh updated according to your comments. Thanks!