ath5k: Preserve tx power level requested from above on phy_init

By using cur_pwr on phy_init we re-use the power level previously set by the
driver, not the one we got from above.
Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath5k/phy.c

@@ -3802,8 +3802,8 @@ ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
 	 * RF buffer settings on 5211/5212+ so that we
 	 * properly set curve indices.
 	 */
-	ret = ath5k_hw_txpower(ah, channel, ah->ah_txpower.txp_cur_pwr ?
-			ah->ah_txpower.txp_cur_pwr / 2 : AR5K_TUNE_MAX_TXPOWER);
+	ret = ath5k_hw_txpower(ah, channel, ah->power_level ?
+			ah->power_level * 2 : AR5K_TUNE_MAX_TXPOWER);
 	if (ret)
 		return ret;