ath9k: dfs kill ath9k specyfic code

Kill of using ath9k_hw_common() function
in dfs detector code.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 7df728f3..ba02ef2 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -680,7 +680,8 @@
 	sc->sc_ah = ah;
 	pCap = &ah->caps;
 
-	sc->dfs_detector = dfs_pattern_detector_init(ah, NL80211_DFS_UNSET);
+	common = ath9k_hw_common(ah);
+	sc->dfs_detector = dfs_pattern_detector_init(common, NL80211_DFS_UNSET);
 
 	if (!pdata) {
 		ah->ah_flags |= AH_USE_EEPROM;
@@ -694,7 +695,6 @@
 		ah->external_reset = pdata->external_reset;
 	}
 
-	common = ath9k_hw_common(ah);
 	common->ops = &ah->reg_ops;
 	common->bus_ops = bus_ops;
 	common->ah = ah;