Claude review: drm/mediatek: simplify mtk_crtc allocation

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

**Correctness:**

The change is functionally correct:

1. `struct mtk_ddp_comp **ddp_comp` (a pointer to a heap-allocated array of pointers) is replaced with `struct mtk_ddp_comp *ddp_comp[]` (a flexible array member of pointers). Both yield the same element type (`struct mtk_ddp_comp *`) when indexed, so all ~50 usage sites (`mtk_crtc->ddp_comp[i]`) remain type-correct without changes.

2. The FAM is correctly placed as the last member of `struct mtk_crtc`.

3. The allocation size `struct_size(mtk_crtc, ddp_comp, path_len + (conn_routes ? 1 : 0))` correctly accounts for the extra slot that `conn_routes` may later populate (line 1182: `mtk_crtc->ddp_comp_nr++`), matching the original `devm_kcalloc` count.

4. The struct is only dynamically allocated and accessed via `to_mtk_crtc()` / `container_of()` — never embedded in another struct or stack-allocated — so the FAM constraint is satisfied.

5. The reordering of `mmsys_dev` vs `ddp_comp_nr` assignment is harmless; neither depends on the other.

**Style nit:**

The allocation line is quite long (over 100 characters):
```c
mtk_crtc = devm_kzalloc(dev, struct_size(mtk_crtc, ddp_comp, path_len + (conn_routes ? 1 : 0)), GFP_KERNEL);
```
Consider breaking this across lines, e.g. computing the `num_comp` count into a local variable beforehand or splitting the function arguments, to stay within kernel style (~100 col). Not a blocker.

**No other issues found.** The patch is a clean simplification that removes one allocation and one error path.

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Generated by Claude Code Patch Reviewer