ASoC: SDCA: Fix return value in detected_mode_handler()

The detected mode IRQ handler should return an irqreturn_t not a regular
error code. Correct the return value in detected_mode_handler().

Fixes: b9ab3b6 ("ASoC: SDCA: Add some initial IRQ handlers")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Message-ID: <20250820163717.1095846-3-ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: charleskeepax

sound/soc/sdca/sdca_interrupts.c

@@ -155,7 +155,7 @@ static irqreturn_t detected_mode_handler(int irq, void *data)
 							   SDCA_CTL_SELECTED_MODE_NAME);
 
 		if (!name)
-			return -ENOMEM;
+			return IRQ_NONE;
 
 		kctl = snd_soc_component_get_kcontrol(component, name);
 		if (!kctl) {