rtlwifi: Simplify rtl_get/set inline functions

Use a temporary to make the code a bit neater.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rtlwifi/wifi.h

@@ -1954,37 +1954,35 @@ static inline void rtl_write_dword(struct rtl_priv *rtlpriv,
 static inline u32 rtl_get_bbreg(struct ieee80211_hw *hw,
 				u32 regaddr, u32 bitmask)
 {
-	return ((struct rtl_priv *)(hw)->priv)->cfg->ops->get_bbreg(hw,
-								    regaddr,
-								    bitmask);
+	struct rtl_priv *rtlpriv = hw->priv;
+
+	return rtlpriv->cfg->ops->get_bbreg(hw, regaddr, bitmask);
 }
 
 static inline void rtl_set_bbreg(struct ieee80211_hw *hw, u32 regaddr,
 				 u32 bitmask, u32 data)
 {
-	((struct rtl_priv *)(hw)->priv)->cfg->ops->set_bbreg(hw,
-							     regaddr, bitmask,
-							     data);
+	struct rtl_priv *rtlpriv = hw->priv;
 
+	rtlpriv->cfg->ops->set_bbreg(hw, regaddr, bitmask, data);
 }
 
 static inline u32 rtl_get_rfreg(struct ieee80211_hw *hw,
 				enum radio_path rfpath, u32 regaddr,
 				u32 bitmask)
 {
-	return ((struct rtl_priv *)(hw)->priv)->cfg->ops->get_rfreg(hw,
-								    rfpath,
-								    regaddr,
-								    bitmask);
+	struct rtl_priv *rtlpriv = hw->priv;
+
+	return rtlpriv->cfg->ops->get_rfreg(hw, rfpath, regaddr, bitmask);
 }
 
 static inline void rtl_set_rfreg(struct ieee80211_hw *hw,
 				 enum radio_path rfpath, u32 regaddr,
 				 u32 bitmask, u32 data)
 {
-	((struct rtl_priv *)(hw)->priv)->cfg->ops->set_rfreg(hw,
-							     rfpath, regaddr,
-							     bitmask, data);
+	struct rtl_priv *rtlpriv = hw->priv;
+
+	rtlpriv->cfg->ops->set_rfreg(hw, rfpath, regaddr, bitmask, data);
 }
 
 static inline bool is_hal_stop(struct rtl_hal *rtlhal)