[PATCH 4.9 12/29] ieee802154: fix error return code in ieee802154_llsec_getparams()

[Greg Kroah-Hartman]

From: Wei Yongjun <weiyongjun1@xxxxxxxxxx>

[ Upstream commit 373e864cf52403b0974c2f23ca8faf9104234555 ]

Fix to return negative error code -ENOBUFS from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 3e9c156e2c21 ("ieee802154: add netlink interfaces for llsec")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210519141614.3040055-1-weiyongjun1@xxxxxxxxxx
Signed-off-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 net/ieee802154/nl-mac.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/ieee802154/nl-mac.c b/net/ieee802154/nl-mac.c
index c0930b9fe848..7531cb1665d2 100644
--- a/net/ieee802154/nl-mac.c
+++ b/net/ieee802154/nl-mac.c
@@ -688,8 +688,10 @@ int ieee802154_llsec_getparams(struct sk_buff *skb, struct genl_info *info)
 	    nla_put_u8(msg, IEEE802154_ATTR_LLSEC_SECLEVEL, params.out_level) ||
 	    nla_put_u32(msg, IEEE802154_ATTR_LLSEC_FRAME_COUNTER,
 			be32_to_cpu(params.frame_counter)) ||
-	    ieee802154_llsec_fill_key_id(msg, &params.out_key))
+	    ieee802154_llsec_fill_key_id(msg, &params.out_key)) {
+		rc = -ENOBUFS;
 		goto out_free;
+	}
 
 	dev_put(dev);
 
-- 
2.30.2