ASoC: Fix Blackfin AC97 DAI probe function return code

A probe function should have a clean return 0 path.

Cc: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NBryan Wu <cooloney@kernel.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/blackfin/bf5xx-ac97.c

@@ -378,6 +378,8 @@ static int bf5xx_ac97_probe(struct platform_device *pdev,
 		goto sport_config_err;
 	}
 
+	return 0;
+
 sport_config_err:
 	kfree(sport_handle);
 sport_err: