LF-3548-2: ASoC: fsl_easrc_m2m: Fix issue with double kfree

The pointer need to be NULL after kfree to avoid kernel dummp
in second kfree for same pointer.

[ 9285.401707] Call trace:
[ 9285.404171]  kfree+0x388/0x3fc
[ 9285.407238]  fsl_easrc_ioctl+0xf4/0xf80

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Peng Zhang <peng.zhang_8@nxp.com>

diff --git a/sound/soc/fsl/fsl_easrc_m2m.c b/sound/soc/fsl/fsl_easrc_m2m.c
index 8ccdbaf..7a5d6a1 100755 (executable)
--- a/sound/soc/fsl/fsl_easrc_m2m.c
+++ b/sound/soc/fsl/fsl_easrc_m2m.c
@@ -67,7 +67,7 @@ static int fsl_allocate_dma_buf(struct fsl_easrc_m2m *m2m)
 
 alloc_fail:
        kfree(input->dma_vaddr);
-
+       input->dma_vaddr = NULL;
        return -ENOMEM;
 }