ath9k: Fix bug in disabling MIB counters

This patch fixes a bug in ANI, where the MIB counters were
being cleared before the stats were updated.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath9k/ani.c

@@ -642,14 +642,13 @@ void ath9k_enable_mib_counters(struct ath_hw *ah)
 	REG_WRITE(ah, AR_PHY_ERR_MASK_2, AR_PHY_ERR_CCK_TIMING);
 }
 
+/* Freeze the MIB counters, get the stats and then clear them */
 void ath9k_hw_disable_mib_counters(struct ath_hw *ah)
 {
 	DPRINTF(ah->ah_sc, ATH_DBG_ANI, "Disable MIB counters\n");
-
-	REG_WRITE(ah, AR_MIBC, AR_MIBC_FMC | AR_MIBC_CMC);
-
+	REG_WRITE(ah, AR_MIBC, AR_MIBC_FMC);
 	ath9k_hw_update_mibstats(ah, &ah->ah_mibStats);
-
+	REG_WRITE(ah, AR_MIBC, AR_MIBC_CMC);
 	REG_WRITE(ah, AR_FILT_OFDM, 0);
 	REG_WRITE(ah, AR_FILT_CCK, 0);
 }