iwlwifi: fix a memory leak in scan

This patch fixes a memory leak that the scan buffer isn't released
on exit.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index c9bbfbb..61716ba 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -911,6 +911,7 @@
 	iwl_free_calib_results(priv);
 	iwlcore_free_geos(priv);
 	iwl_free_channel_map(priv);
+	kfree(priv->scan);
 }
 EXPORT_SYMBOL(iwl_uninit_drv);