Ath5k: fix bintval setup

bintval is set to the initial value at .config_interface which is too
late, since it overwrites previously set value from .config. Move the
initialization to the .add_interface.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Nick Kossifidis <mickflemm@gmail.com>
Cc: Luis R. Rodriguez <mcgrof@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c
index 7bc012f..0676c6d 100644
--- a/drivers/net/wireless/ath5k/base.c
+++ b/drivers/net/wireless/ath5k/base.c
@@ -2751,6 +2751,11 @@
 		ret = -EOPNOTSUPP;
 		goto end;
 	}
+
+	/* Set to a reasonable value. Note that this will
+	 * be set to mac80211's value at ath5k_config(). */
+	sc->bintval = 1000;
+
 	ret = 0;
 end:
 	mutex_unlock(&sc->lock);
@@ -2795,9 +2800,6 @@
 	struct ath5k_hw *ah = sc->ah;
 	int ret;
 
-	/* Set to a reasonable value. Note that this will
-	 * be set to mac80211's value at ath5k_config(). */
-	sc->bintval = 1000;
 	mutex_lock(&sc->lock);
 	if (sc->vif != vif) {
 		ret = -EIO;