b43: LP-PHY: Don't adjust gain table for rev2+ when setting channel

Rev2+ never needs to have gain tables adjusted according to the spec.
Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/phy_lp.c

@@ -2059,10 +2059,9 @@ static int b43_lpphy_op_switch_channel(struct b43_wldev *dev,
 		if (err)
 			return err;
 		lpphy_japan_filter(dev, new_channel);
+		lpphy_adjust_gain_table(dev, channel2freq_lp(new_channel));
 	}
 
-	lpphy_adjust_gain_table(dev, channel2freq_lp(new_channel));
-
 	return 0;
 }