mac80211_hwsim: propagate genlmsg_reply return code

[ Upstream commit 17407715240456448e4989bee46ffc93991add83 ]

genlmsg_reply can fail, so propagate its return code
Signed-off-by: NLi RongQing <lirongqing@baidu.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

drivers/net/wireless/mac80211_hwsim.c

@@ -3454,7 +3454,7 @@ static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
 			goto out_err;
 		}
 
-		genlmsg_reply(skb, info);
+		res = genlmsg_reply(skb, info);
 		break;
 	}