ath10k: Fix ath10k_wmi_tlv_op_pull_peer_stats_info() unlock without lock

stable inclusion
from stable-5.10.37
commit 1cce33fe59f095c6198de32e5fcda36e703dfddb
bugzilla: 51868
CVE: NA

--------------------------------

[ Upstream commit eaaf52e4 ]

ath10k_wmi_tlv_op_pull_peer_stats_info() could try to unlock RCU lock
winthout locking it first when peer reason doesn't match the valid
cases for this function.

Add a default case to return without unlocking.

Fixes: 09078368 ("ath10k: hold RCU lock when calling ieee80211_find_sta_by_ifaddr()")
Reported-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NShuah Khan <skhan@linuxfoundation.org>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210406230228.31301-1-skhan@linuxfoundation.orgSigned-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/net/wireless/ath/ath10k/wmi-tlv.c

@@ -592,6 +592,9 @@ static void ath10k_wmi_event_tdls_peer(struct ath10k *ar, struct sk_buff *skb)
 					GFP_ATOMIC
 					);
 		break;
+	default:
+		kfree(tb);
+		return;
 	}
 
 exit: