target/loongarch: Clean up tlb when cpu reset

We should make sure that tlb is clean when cpu reset.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20220705070950.2364243-1-gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/loongarch/cpu.c

@@ -479,6 +479,7 @@ static void loongarch_cpu_reset(DeviceState *dev)
 
 #ifndef CONFIG_USER_ONLY
     env->pc = 0x1c000000;
+    memset(env->tlb, 0, sizeof(env->tlb));
 #endif
 
     restore_fp_status(env);