ath9k_htc: remove return of value in empty definintion of ath9k_htc_deinit_debug

Cc: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
index b34acde..9dde265 100644
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -629,7 +629,9 @@
 void ath9k_htc_deinit_debug(struct ath9k_htc_priv *priv);
 #else
 static inline int ath9k_htc_init_debug(struct ath_hw *ah) { return 0; };
-static inline void ath9k_htc_deinit_debug(struct ath9k_htc_priv *priv) { return 0; };
+static inline void ath9k_htc_deinit_debug(struct ath9k_htc_priv *priv)
+{
+}
 #endif /* CONFIG_ATH9K_HTC_DEBUGFS */
 
 #endif /* HTC_H */