misc: mei: client.c: fix problem of return '-EOVERFLOW' in mei_cl_write

[ Upstream commit ee6236027218f8531916f1c5caa5dc330379f287 ]

Clang static analyzer complains that value stored to 'rets' is never
read.Let 'buf_len = -EOVERFLOW' to make sure we can return '-EOVERFLOW'.

Fixes: 8c8d964ce90f ("mei: move hbuf_depth from the mei device to the hw modules")
Signed-off-by: Su Hui <suhui@nfschina.com>
Link: https://lore.kernel.org/r/20231120095523.178385-2-suhui@nfschina.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c
index 77501e3..c70c892 100644 (file)
--- a/drivers/misc/mei/client.c
+++ b/drivers/misc/mei/client.c
@@ -2002,7 +2002,7 @@ ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb)
 
        hbuf_slots = mei_hbuf_empty_slots(dev);
        if (hbuf_slots < 0) {
-               rets = -EOVERFLOW;
+               buf_len = -EOVERFLOW;
                goto out;
        }