ASoC: samsung: snow: simplify error handling

cppcheck warning:

sound/soc/samsung/snow.c:219:9: warning: Identical condition and
return expression 'ret', return value is always 0
[identicalConditionAfterEarlyExit]
 return ret;
        ^
sound/soc/samsung/snow.c:215:6: note: If condition 'ret' is true, the
function will return/exit
if (ret)
     ^
sound/soc/samsung/snow.c:219:9: note: Returning identical expression
'ret'
 return ret;
        ^

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>

Author: plbossart

sound/soc/samsung/snow.c

@@ -216,7 +216,7 @@ static int snow_probe(struct platform_device *pdev)
 		return dev_err_probe(&pdev->dev, ret,
 				     "snd_soc_register_card failed\n");
 
-	return ret;
+	return 0;
 }
 
 static int snow_remove(struct platform_device *pdev)