ASoC: Intel: broadwell: Simplify device probe

With legacy ADSP private context adjusted, there is no need for double
safety.
Signed-off-by: NCezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20190822113616.22702-5-cezary.rojewski@intel.comTested-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/intel/boards/broadwell.c

@@ -270,18 +270,14 @@ static struct snd_soc_card broadwell_rt286 = {
 static int broadwell_audio_probe(struct platform_device *pdev)
 {
 	struct snd_soc_acpi_mach *mach;
-	const char *platform_name = NULL;
 	int ret;
 
 	broadwell_rt286.dev = &pdev->dev;
 
 	/* override plaform name, if required */
 	mach = (&pdev->dev)->platform_data;
-	if (mach) /* extra check since legacy does not pass parameters */
-		platform_name = mach->mach_params.platform;
-
 	ret = snd_soc_fixup_dai_links_platform_name(&broadwell_rt286,
-						    platform_name);
+						    mach->mach_params.platform);
 	if (ret)
 		return ret;