target/mips: Reduce CPUState scope when used with CPU_FOREACH()

When possible, reduce CPUState variable scope.
Prefer cpu_env(cpu) over &cpu->env.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@oss.qualcomm.com>
Message-Id: <20260415215539.92629-8-philmd@linaro.org>
3 files changed