nfc: change order inside nfc_se_io error path

commit 7d834b4d1ab66c48e8c0810fdeadaabb80fa2c81 upstream.

cb_context should be freed on the error path in nfc_se_io as stated by
commit 25ff6f8a5a3b ("nfc: fix memory leak of se_io context in
nfc_genl_se_io").

Make the error path in nfc_se_io unwind everything in reverse order, i.e.
free the cb_context after unlocking the device.

Suggested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230306212650.230322-1-pchelkin@ispras.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 2c5443ce449c3984a185aa48ad10dbe8bef73cd8..f705800b224887fe1168b0ff6817a97df1b10177 100644 (file)
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -1464,8 +1464,8 @@ static int nfc_se_io(struct nfc_dev *dev, u32 se_idx,
        return rc;
 
 error:
-       kfree(cb_context);
        device_unlock(&dev->dev);
+       kfree(cb_context);
        return rc;
 }