ASoC: rk817: Remove unneeded semicolon

Fix the following coccicheck warnings:

./sound/soc/codecs/rk817_codec.c:49:2-3: Unneeded semicolon.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/1622802209-45031-1-git-send-email-jiapeng.chong@linux.alibaba.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rk817_codec.c

@@ -46,7 +46,8 @@ static int rk817_init(struct snd_soc_component *component)
 	if (rk817->mic_in_differential) {
 		snd_soc_component_update_bits(component, RK817_CODEC_AMIC_CFG0, MIC_DIFF_MASK,
 			MIC_DIFF_EN);
-	};
+	}
+
 	return 0;
 }