qcacmn: dfs memory leak fixed

dfs_detach function was called from ol/lmac layer during ath_detach.
To fix the memory leak dfs_detach function called from dfs pdev
destroy function.

Change-Id: I41602c17ac9ab0b6eb1e9fbe9abe764d00ed0e93
CRs-Fixed: 2001106

umac/dfs/dispatcher/src/wlan_dfs_init_deinit_api.c

@@ -189,6 +189,8 @@ QDF_STATUS wlan_dfs_pdev_obj_destroy_notification(struct wlan_objmgr_pdev *pdev,
 				WLAN_UMAC_COMP_DFS,
 				(void *)dfs);
 
+		nif_dfs_detach(dfs);
+		sif_dfs_detach(dfs);
 		dfs->dfs_pdev_obj = NULL;
 		dfs_destroy_object(dfs);
 	}