Fix memory allocation in rclc_parameter

[bjsowa]

1. Fixed rclc_parameter_descriptor_initialize_string null dereference after failed allocation.
2. Simplified rclc_parameter_server_fini_memory function. There is no need to call fini on all fields of the message as the top-level fini function will do this either way.
3. Rewritten init functions to return on first error. This fixes issue with init_parameter_server_memory where it tries to dereference an object after it failed to allocate.

I haven't touched the low memory mode but I'm fairly certain it can use the same fini memory function.

[Zard-C]

While CHECK_BOOL_RET is a concise and effective macro for error handling, I don't think it's a good idea, ts use in the codebase should be carefully considered. Inconsistent usage, lack of flexibility, and the potential for debugging difficulties or hidden side effects can cause maintainability issues

[bjsowa]

Do you have any alternatives suggestions?

[fujitatomoya]

can be more flexible in future use?

Suggested change

	#define CHECK_BOOL_RET(ret) do {if (!(ret)) {return RCL_RET_ERROR;}} while (0)
	#define CHECK_BOOL_RET(ret, error_type) do {if (!(ret)) {return error_type;}} while (0)

[fujitatomoya]

i am not really fan of this macro, i would inline those code instead of introducing macro.

i think you are trying to avoid adding those error check code, but there are many other places. so that should be just fine. and we could also add debug logging information as well.