Instead of using a local reply to first read out the header from the
mailbox then memcpy it or read it again to msg->reply_data, read it
directly to it's final place from the start.

If we received an error we do not need to do a memcpy anymore.
If the reply is reporting a success then we don not need to read the reply
again from the mailbox if the reply_size equals to the already read header
size.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: NDaniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: NBard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: NRanjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220330201926.1330402-9-ranjani.sridharan@linux.intel.comSigned-off-by: NMark Brown <broonie@kernel.org>