drm/meson: fix canvas release in bind function

Allocated canvases may not be released on the error exit path of
meson_drv_bind_master(), leading to resource leaking. Rewrite exit path
to release canvases on error.

Fixes: 2bf6b5b0 ("drm/meson: exclusively use the canvas provider module")
Signed-off-by: Yao Zi <ziyao@disroot.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240703155826.10385-2-ziyao@disroot.org


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240703155826.10385-2-ziyao@disroot.org