HO: always do async handover

We're really only interested in async handover so far.
Set ho->async to true always.

Change-Id: I48715864d4b953987c86d93fe1b3a5456f0c4e0f
diff --git a/src/libbsc/handover_logic.c b/src/libbsc/handover_logic.c
index fad4a33..2b61c93 100644
--- a/src/libbsc/handover_logic.c
+++ b/src/libbsc/handover_logic.c
@@ -138,10 +138,8 @@
 	ho->old_lchan = old_lchan;
 	ho->new_lchan = new_lchan;
 	ho->ho_ref = ho_ref++;
-	if (!do_assignment) {
-		ho->inter_cell = true;
-		ho->async = true;
-	}
+	ho->inter_cell = !do_assignment;
+	ho->async = true;
 
 	/* copy some parameters from old lchan */
 	memcpy(&new_lchan->encr, &old_lchan->encr, sizeof(new_lchan->encr));