[PATCH -next] ASoC: mediatek: mt2701: fix return value check in mt2701_afe_pcm_dev_probe()

[Wei Yongjun]

In case of error, the function syscon_node_to_regmap() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: dfa3cbb83e09 ("ASoC: mediatek: modify MT2701 AFE driver to adapt mfd 
device")
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 sound/soc/mediatek/mt2701/mt2701-afe-pcm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c 
b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
index f0cd08f..5bc4e00 100644
--- a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
+++ b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
@@ -1440,9 +1440,9 @@ static int mt2701_afe_pcm_dev_probe(struct 
platform_device *pdev)
        }
 
        afe->regmap = syscon_node_to_regmap(dev->parent->of_node);
-       if (!afe->regmap) {
+       if (IS_ERR(afe->regmap)) {
                dev_err(dev, "could not get regmap from parent\n");
-               return -ENODEV;
+               return PTR_ERR(afe->regmap);
        }
 
        mutex_init(&afe->irq_alloc_lock);