mac80211: fix panic when using hardware WEP

e039fa4a ("mac80211: move TX info into
skb->cb") misplaced code for setting hardware WEP keys.  Move it back.
This fixes kernel panic in b43 if WEP is used and hardware encryption
is enabled.
Signed-off-by: Pavel Roskin <proski@gnu.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/wep.c

@@ -335,10 +335,10 @@ static int wep_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
 	info->control.icv_len = WEP_ICV_LEN;
 
 	if (!(tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) {
-		info->control.hw_key = &tx->key->conf;
 		if (ieee80211_wep_encrypt(tx->local, skb, tx->key))
 			return -1;
 	} else {
+		info->control.hw_key = &tx->key->conf;
 		if (tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV) {
 			if (!ieee80211_wep_add_iv(tx->local, skb, tx->key))
 				return -1;