[PATCH v2] ASoC: Intel: avs: Fix null-ptr-deref in avs_component_probe()

[Henry Martin <bsdhenrymartin@gmail.com>]

devm_kasprintf() returns NULL when memory allocation fails. Currently,
avs_component_probe() does not check for this case, which results in a
NULL pointer dereference.

Fixes: 739c031110da ("ASoC: Intel: avs: Provide support for fallback topology")
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Ethan Carter Edwards <ethan@ethancedwards.com>
Signed-off-by: Henry Martin <bsdhenrymartin@gmail.com>
---
V1 -> V2: No functional changes, just correct title and redundant commit
message.

 sound/soc/intel/avs/pcm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c
index dac463390da1..7072bcf4e56f 100644
--- a/sound/soc/intel/avs/pcm.c
+++ b/sound/soc/intel/avs/pcm.c
@@ -927,7 +927,8 @@ static int avs_component_probe(struct snd_soc_component *component)
 		else
 			mach->tplg_filename = devm_kasprintf(adev->dev, GFP_KERNEL,
 							     "hda-generic-tplg.bin");
-
+		if (!mach->tplg_filename)
+			return -ENOMEM;
 		filename = kasprintf(GFP_KERNEL, "%s/%s", component->driver->topology_name_prefix,
 				     mach->tplg_filename);
 		if (!filename)
-- 
2.34.1