ASoC: Intel: Skylake: Fix test of a field address

Skylake driver uses snd_dma_buffer for data and buffer, these are variables
and not pointer so do not test field addresses.
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl-sst-cldma.c

@@ -138,10 +138,8 @@ static void skl_cldma_cleanup(struct sst_dsp  *ctx)
 	sst_dsp_shim_write(ctx, SKL_ADSP_REG_CL_SD_CBL, 0);
 	sst_dsp_shim_write(ctx, SKL_ADSP_REG_CL_SD_LVI, 0);
 
-	if (&ctx->cl_dev.dmab_data)
-		ctx->dsp_ops.free_dma_buf(ctx->dev, &ctx->cl_dev.dmab_data);
-	if (&ctx->cl_dev.dmab_bdl)
-		ctx->dsp_ops.free_dma_buf(ctx->dev, &ctx->cl_dev.dmab_bdl);
+	ctx->dsp_ops.free_dma_buf(ctx->dev, &ctx->cl_dev.dmab_data);
+	ctx->dsp_ops.free_dma_buf(ctx->dev, &ctx->cl_dev.dmab_bdl);
 }
 
 static int skl_cldma_wait_interruptible(struct sst_dsp *ctx)