[PATCH 4/8] ASoC: soc-card-test: Check return value of kunit_device_register()

["Amadeusz Sławiński" <amade@asmblr.net>]

Call to kunit_device_register() can fail. Check return result of
register call. While at it introduce helper variable so that if it fails
put_device is called on properly initialized variable.

Fixes: ef7784e41db7 ("ASoC: soc-card: Add KUnit test case for snd_soc_card_get_kcontrol")
Signed-off-by: Amadeusz Sławiński <amade@asmblr.net>
---
 sound/soc/soc-card-test.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sound/soc/soc-card-test.c b/sound/soc/soc-card-test.c
index 47dfd8b1babc..610b8220786d 100644
--- a/sound/soc/soc-card-test.c
+++ b/sound/soc/soc-card-test.c
@@ -70,6 +70,7 @@ static void test_snd_soc_card_get_kcontrol(struct kunit *test)
 static int soc_card_test_case_init(struct kunit *test)
 {
 	struct soc_card_test_priv *priv;
+	struct device *dev;
 	int ret;
 
 	priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
@@ -82,8 +83,10 @@ static int soc_card_test_case_init(struct kunit *test)
 	if (!priv->card)
 		return -ENOMEM;
 
-	priv->card_dev = kunit_device_register(test, "sound-soc-card-test");
-	priv->card_dev = get_device(priv->card_dev);
+	dev = kunit_device_register(test, "sound-soc-card-test");
+	if (IS_ERR(dev))
+		return PTR_ERR(dev);
+	priv->card_dev = get_device(dev);
 	if (!priv->card_dev)
 		return -ENODEV;
 
-- 
2.56.0