[PATCH] ALSA: pci/asihpi: Fix memory leak in snd_card_asihpi_capture_open()

[Dinghao Liu]

When snd_pcm_hw_constraint_pow2() fails, dpcm should be freed
just like when hpi_instream_open()  fails.

Fixes: 719f82d3987aa ("ALSA: Add support of AudioScience ASI boards")
Signed-off-by: Dinghao Liu <dinghao.liu at zju.edu.cn>
---
 sound/pci/asihpi/asihpi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c
index 023c35a2a951..736eceacd3d0 100644
--- a/sound/pci/asihpi/asihpi.c
+++ b/sound/pci/asihpi/asihpi.c
@@ -1244,8 +1244,10 @@ static int snd_card_asihpi_capture_open(struct snd_pcm_substream *substream)
 	if (card->can_dma)
 		err = snd_pcm_hw_constraint_pow2(runtime, 0,
 					SNDRV_PCM_HW_PARAM_BUFFER_BYTES);
-	if (err < 0)
+	if (err < 0) {
+		kfree(dpcm);
 		return err;
+	}
 
 	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
 		card->update_interval_frames);
-- 
2.17.1