DAOS-19116 object: drop reference when fail in obj_ioc_begin_lite

It is possible that obj_ioc_begin_lite() maybe failed because
of empty or stale pool map on server. At that time, the logic
has already held reference against the container open handle.
Under such case, directly returning error# to the caller may
cause reference leak as to such container cannot be properly
stopped in subsequent operations.

Signed-off-by: Fan Yong <fan.yong@hpe.com>

Author: Nasf-Fan

src/object/srv_obj.c

@@ -2252,6 +2252,8 @@ obj_ioc_fini(struct obj_io_context *ioc, int err)
 	}
 }
 
+static void obj_ioc_end(struct obj_io_context *ioc, int err);
+
 /* Setup lite IO context, it is only for compound RPC so far:
  * - no associated object yet
  * - no permission check (not sure it's read/write)
@@ -2355,6 +2357,10 @@ obj_ioc_begin_lite(uint32_t rpc_map_ver, uuid_t pool_uuid,
 	d_tm_inc_gauge(tls->ot_op_active[opc_get(rpc->cr_opc)], 1);
 	ioc->ioc_start_time = daos_get_ntime();
 	ioc->ioc_began = 1;
+
+	if (rc != 0)
+		obj_ioc_end(ioc, rc);
+
 	return rc;
 }