ASoC: tlv320adc3xxx: remove unnecessary NULL check before clk_disable_unprepare()

clk_disable_unprepare() already checks NULL by using IS_ERR_OR_NULL.
Remove unneeded NULL check for adc3xxx->mclk here.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Link: https://patch.msgid.link/20250312034337.1235378-1-nichen@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Chen Ni

sound/soc/codecs/tlv320adc3xxx.c

@@ -1493,8 +1493,7 @@ static void adc3xxx_i2c_remove(struct i2c_client *client)
 {
 	struct adc3xxx *adc3xxx = i2c_get_clientdata(client);
 
-	if (adc3xxx->mclk)
-		clk_disable_unprepare(adc3xxx->mclk);
+	clk_disable_unprepare(adc3xxx->mclk);
 	adc3xxx_free_gpio(adc3xxx);
 	snd_soc_unregister_component(&client->dev);
 }