dsp: address memleak in msm_audio_ion_map_kernel

dma_vmap is not freed in else case of is_iova, so kfree dma_vmap
when is_iova is false. And also if dma_buf_vmap kernel map is
failed, need to end cpu access dma buf.

Change-Id: I111fb7a2a367a8418f46a7b5fc1459d135d7115e
Signed-off-by: Prasad Kumpatla <[email protected]>

dsp/msm_audio_ion.c

@@ -120,6 +120,7 @@ static int msm_audio_ion_map_kernel(struct dma_buf *dma_buf,
 	if (rc) {
 		pr_err("%s: kernel mapping of dma_buf failed\n",
 		       __func__);
+		dma_buf_end_cpu_access(dma_buf, DMA_BIDIRECTIONAL);
 		goto exit;
 	}
 
@@ -205,6 +206,7 @@ static int msm_audio_dma_buf_map(struct dma_buf *dma_buf,
 		alloc_data->vmap = iosys_vmap;
 	} else {
 		*addr = MSM_AUDIO_ION_PHYS_ADDR(alloc_data);
+		kfree(iosys_vmap);
 	}
 
 	msm_audio_ion_add_allocation(ion_data, alloc_data);