ath6kl: after cleanup properly reflect that sg is disabled

This allows the hardware to be restarted, as it will cause the
sg to be reinitialized.
Signed-off-by: James Minor <james.minor@ni.com>
Reviewed-by: Steve deRosier <steve.derosier@lairdtech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath6kl/sdio.c

@@ -714,6 +714,8 @@ static void ath6kl_sdio_cleanup_scatter(struct ath6kl *ar)
 		spin_lock_bh(&ar_sdio->scat_lock);
 	}
 	spin_unlock_bh(&ar_sdio->scat_lock);
+
+	ar_sdio->scatter_enabled = false;
 }
 
 /* setup of HIF scatter resources */