[BACKPORT 4.14.y 16/18] ASoC: davinci-mcasp: Fix an error handling path in 'davinci_mcasp_probe()'

[Mathieu Poirier]

From: Christophe Jaillet <christophe.jail...@wanadoo.fr>

commit 1b8b68b05d1868404316d32e20782b00442aba90 upstream

All error handling paths in this function 'goto err' except this one.

If one of the 2 previous memory allocations fails, we should go through
the existing error handling path. Otherwise there is an unbalanced
pm_runtime_enable()/pm_runtime_disable().

Fixes: dd55ff8346a9 ("ASoC: davinci-mcasp: Add set_tdm_slots() support")
Signed-off-by: Christophe JAILLET <christophe.jail...@wanadoo.fr>
Acked-by: Peter Ujfalusi <peter.ujfal...@ti.com>
Signed-off-by: Mark Brown <broo...@kernel.org>
Signed-off-by: Mathieu Poirier <mathieu.poir...@linaro.org>
---
 sound/soc/davinci/davinci-mcasp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sound/soc/davinci/davinci-mcasp.c 
b/sound/soc/davinci/davinci-mcasp.c
index b4e6f4a04cb6..07bac9ea65c4 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -2022,8 +2022,10 @@ static int davinci_mcasp_probe(struct platform_device 
*pdev)
                             GFP_KERNEL);
 
        if (!mcasp->chconstr[SNDRV_PCM_STREAM_PLAYBACK].list ||
-           !mcasp->chconstr[SNDRV_PCM_STREAM_CAPTURE].list)
-               return -ENOMEM;
+           !mcasp->chconstr[SNDRV_PCM_STREAM_CAPTURE].list) {
+               ret = -ENOMEM;
+               goto err;
+       }
 
        ret = davinci_mcasp_set_ch_constraints(mcasp);
        if (ret)
-- 
2.17.1