[PATCH] ASoC: SDCA: Check devm_mutex_init() return value

[Charles Keepax <ckeepax@opensource.cirrus.com>]

From: Stephen Rothwell <sfr@canb.auug.org.au>

Fix interaction with commit daec29dcc873 ("locking/mutex: Mark
devm_mutex_init() as __must_check"), add return value check. There is no
need for additional complex error handling here, failure to init the
mutex means the code can't progress, so the failure just needs to be passed
up to the caller.

Fixes: b126394d9ec6 ("ASoC: SDCA: Generic interrupt support")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
---

As Stephen's commit was fine I have just used that with some minor
tweaks to the commit message and removing the comment, I hope this is
ok.

Thanks,
Charles

 sound/soc/sdca/sdca_interrupts.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sdca/sdca_interrupts.c b/sound/soc/sdca/sdca_interrupts.c
index b76512732af8..d442ba2f5681 100644
--- a/sound/soc/sdca/sdca_interrupts.c
+++ b/sound/soc/sdca/sdca_interrupts.c
@@ -419,7 +419,9 @@ struct sdca_interrupt_info *sdca_irq_allocate(struct device *dev,
 
 	info->irq_chip = sdca_irq_chip;
 
-	devm_mutex_init(dev, &info->irq_lock);
+	ret = devm_mutex_init(dev, &info->irq_lock);
+	if (ret)
+		return ERR_PTR(ret);
 
 	ret = devm_regmap_add_irq_chip(dev, regmap, irq, IRQF_ONESHOT, 0,
 				       &info->irq_chip, &info->irq_data);
-- 
2.39.5