ath9k: move common regulatory code out of if() branches

Both branches of the regulatory check in ath_attach() set up a
custom regulatory domain and apply radar and world flags, so extract
those into a single path.

While at it, fix a couple of spelling errors and an unnecessary extra
pointer traversal.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath9k/main.c

@@ -1570,6 +1570,7 @@ static int ath_init(u16 devid, struct ath_softc *sc)
 int ath_attach(u16 devid, struct ath_softc *sc)
 {
 	struct ieee80211_hw *hw = sc->hw;
+	const struct ieee80211_regdomain *regd;
 	int error = 0, i;
 
 	DPRINTF(sc, ATH_DBG_CONFIG, "Attach ATH hw\n");
@@ -1640,25 +1641,20 @@ int ath_attach(u16 devid, struct ath_softc *sc)
 #endif
 
 	if (ath9k_is_world_regd(sc->sc_ah)) {
-		/* Anything applied here (prior to wiphy registratoin) gets
+		/* Anything applied here (prior to wiphy registration) gets
 		 * saved on the wiphy orig_* parameters */
-		const struct ieee80211_regdomain *regd =
-			ath9k_world_regdomain(sc->sc_ah);
+		regd = ath9k_world_regdomain(sc->sc_ah);
 		hw->wiphy->custom_regulatory = true;
 		hw->wiphy->strict_regulatory = false;
-		wiphy_apply_custom_regulatory(sc->hw->wiphy, regd);
-		ath9k_reg_apply_radar_flags(hw->wiphy);
-		ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_INIT);
 	} else {
 		/* This gets applied in the case of the absense of CRDA,
-		 * its our own custom world regulatory domain, similar to
+		 * it's our own custom world regulatory domain, similar to
 		 * cfg80211's but we enable passive scanning */
-		const struct ieee80211_regdomain *regd =
-			ath9k_default_world_regdomain();
-		wiphy_apply_custom_regulatory(sc->hw->wiphy, regd);
-		ath9k_reg_apply_radar_flags(hw->wiphy);
-		ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_INIT);
+		regd = ath9k_default_world_regdomain();
 	}
+	wiphy_apply_custom_regulatory(hw->wiphy, regd);
+	ath9k_reg_apply_radar_flags(hw->wiphy);
+	ath9k_reg_apply_world_flags(hw->wiphy, REGDOM_SET_BY_INIT);
 
 	error = ieee80211_register_hw(hw);