[PATCH] net: bridge: fix error return code of do_update_counters()

[Jia-Ju Bai]

When find_table_lock() returns NULL to t, no error return code of
do_update_counters() is assigned.
To fix this bug, ret is assigned with -ENOENT in this case.

Fixes: 49facff9f925 ("netfilter: ebtables: split update_counters into two 
functions")
Reported-by: TOTE Robot <os...@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
---
 net/bridge/netfilter/ebtables.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index ebe33b60efd6..66c9e4077985 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1256,8 +1256,10 @@ static int do_update_counters(struct net *net, const 
char *name,
                return -ENOMEM;
 
        t = find_table_lock(net, name, &ret, &ebt_mutex);
-       if (!t)
+       if (!t) {
+               ret = -ENOENT;
                goto free_tmp;
+       }
 
        if (num_counters != t->private->nentries) {
                ret = -EINVAL;
-- 
2.17.1