ASoC: topology: Fix memleak in soc_tplg_link_elems_load()

commit 2b2d5c4db732c027a14987cfccf767dac1b45170 upstream.

If soc_tplg_link_config() fails, _link needs to be freed in case of
topology ABI version mismatch. However the current code is returning
directly and ends up leaking memory in this case.
This patch fixes that.

Fixes: 593d9e52f9bb ("ASoC: topology: Add support to configure existing physical DAI links")
Signed-off-by: Dragos Tarcatu <dragos_tarcatu@mentor.com>
Link: https://lore.kernel.org/r/20200207185325.22320-2-dragos_tarcatu@mentor.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 0119f07cece6ffa83344816d4f767c10b23c9992..2b4926ec394da73f7e0dc59b89684abd1ee0b8eb 100644 (file)
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -2335,8 +2335,11 @@ static int soc_tplg_link_elems_load(struct soc_tplg *tplg,
                }
 
                ret = soc_tplg_link_config(tplg, _link);
-               if (ret < 0)
+               if (ret < 0) {
+                       if (!abi_match)
+                               kfree(_link);
                        return ret;
+               }
 
                /* offset by version-specific struct size and
                 * real priv data size