ath10k: Fix ath10k_wmi_tlv_op_pull_peer_stats_info() unlock without lock

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: 09078368d516 ("ath10k: hold RCU lock when calling ieee80211_find_sta_by_ifaddr()")
Reported-by: Pavel Machek <[e-mail]>
Signed-off-by: Shuah Khan <[e-mail]>
Signed-off-by: Kalle Valo <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

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

···
 					GFP_ATOMIC
 					);
 		break;
+	default:
+		kfree(tb);
+		return;
 	}
 
 exit: