ASoC: samsung: i2s: remove unassigned variable

cppcheck warning:

sound/soc/samsung/i2s.c:1159:18: style: Variable 'dai' is not assigned
a value. [unassignedVariable]
 struct i2s_dai *dai;
                 ^

This variable is only used for a sizeof(*dai).
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20210219230918.5058-2-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/samsung/i2s.c

@@ -1156,11 +1156,10 @@ static int i2s_alloc_dais(struct samsung_i2s_priv *priv,
 	static const char *stream_names[] = { "Primary Playback",
 					      "Secondary Playback" };
 	struct snd_soc_dai_driver *dai_drv;
-	struct i2s_dai *dai;
 	int i;
 
 	priv->dai = devm_kcalloc(&priv->pdev->dev, num_dais,
-				     sizeof(*dai), GFP_KERNEL);
+				     sizeof(struct i2s_dai), GFP_KERNEL);
 	if (!priv->dai)
 		return -ENOMEM;