ASoC: wm8900: fix a memory leak if wm8900_set_fll fails

Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm8900.c

@@ -1167,6 +1167,7 @@ static int wm8900_resume(struct snd_soc_codec *codec)
 		ret = wm8900_set_fll(codec, 0, fll_in, fll_out);
 		if (ret != 0) {
 			dev_err(codec->dev, "Failed to restart FLL\n");
+			kfree(cache);
 			return ret;
 		}
 	}