ASoC: codecs: rt298: Fix NULL jack in interrupt

Set rt298->jack to passed value in mic_detect, otherwise when jack is
set to NULL on next interrupt call, we may use freed pointer.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220707125701.3518263-2-amadeuszx.slawinski@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt298.c

@@ -335,6 +335,8 @@ static int rt298_mic_detect(struct snd_soc_component *component,
 	bool mic = false;
 	int status = 0;
 
+	rt298->jack = jack;
+
 	/* If jack in NULL, disable HS jack */
 	if (!jack) {
 		regmap_update_bits(rt298->regmap, RT298_IRQ_CTRL, 0x2, 0x0);
@@ -344,7 +346,6 @@ static int rt298_mic_detect(struct snd_soc_component *component,
 		return 0;
 	}
 
-	rt298->jack = jack;
 	regmap_update_bits(rt298->regmap, RT298_IRQ_CTRL, 0x2, 0x2);
 
 	rt298_jack_detect(rt298, &hp, &mic);