ASoC: intel: remove unused variable data and associated code

The variable 'data' is assigned null and never re-assigned. There
is also a redundant check for data being non-null which is always
false, so remove this and the variable data and dma_addr as they
are not used once the dead code has been removed.

Detected with CoverityScan, CID#1324015 ("'Constant' variable gaurds
dead code")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/haswell/sst-haswell-ipc.c

@@ -2000,10 +2000,8 @@ int sst_hsw_module_set_param(struct sst_hsw *hsw,
 	u32 param_size, char *param)
 {
 	int ret;
-	unsigned char *data = NULL;
 	u32 header = 0;
 	u32 payload_size = 0, transfer_parameter_size = 0;
-	dma_addr_t dma_addr = 0;
 	struct sst_hsw_transfer_parameter *parameter;
 	struct device *dev = hsw->dev;
 
@@ -2047,10 +2045,6 @@ int sst_hsw_module_set_param(struct sst_hsw *hsw,
 
 	kfree(parameter);
 
-	if (data)
-		dma_free_coherent(hsw->dsp->dma_dev,
-			param_size, (void *)data, dma_addr);
-
 	return ret;
 }