misc: fastrpc: prevent memory leak in fastrpc_dma_buf_attach

In fastrpc_dma_buf_attach if dma_get_sgtable fails the allocated memory
for a should be released.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Link: https://lore.kernel.org/r/20190925152742.16258-1-navid.emamdoost@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 47ae84afac2e1ee39e93d771f60ebdb49bb78092..1b1a794d639d0d8518e1bbb351966aee8ee74b23 100644 (file)
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -527,6 +527,7 @@ static int fastrpc_dma_buf_attach(struct dma_buf *dmabuf,
                              FASTRPC_PHYS(buffer->phys), buffer->size);
        if (ret < 0) {
                dev_err(buffer->dev, "failed to get scatterlist from DMA API\n");
+               kfree(a);
                return -EINVAL;
        }