pcu: Address the return without value

Fixes: Coverity CID 1040959
diff --git a/src/pcu_vty.c b/src/pcu_vty.c
index 77627fc..8a9255c 100644
--- a/src/pcu_vty.c
+++ b/src/pcu_vty.c
@@ -103,6 +103,7 @@
 	vty_out(vty, " alpha %d%s", bts->alpha, VTY_NEWLINE);
 	vty_out(vty, " gamma %d%s", bts->gamma * 2, VTY_NEWLINE);
 
+	return CMD_SUCCESS;
 }
 
 /* per-BTS configuration */