volume: Bail out if there is no configuration or it is of wrong size

It is possible to fabricate a message for FW that initializes volume module
without a configuration. Make a safe guard again crashing from that.

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>

src/audio/module_adapter/module/volume/volume.c

@@ -407,6 +407,12 @@ static int volume_init(struct processing_module *mod)
  const size_t vol_size = sizeof(int32_t) * SOF_IPC_MAX_CHANNELS * 4;
  int i;
 
+ if (!vol || cfg->size != sizeof(*vol)) {
+ comp_err(dev, "volume_init(): No configuration data or bad data size %u",
+ cfg->size);
+ return -EINVAL;
+ }
+
  cd = rzalloc(SOF_MEM_ZONE_RUNTIME, 0, SOF_MEM_CAPS_RAM, sizeof(struct vol_data));
  if (!cd)
  return -ENOMEM;