Fix all the bugs

- Mem leaks
- Stack corruption
- Div by 0
- Double frees

bootloader/soc/clock.c

@@ -336,7 +336,8 @@ static int _clock_sdmmc_config_clock_source_inner(u32 *pout, u32 id, u32 val)
 		divisor = 2;
 		break;
 	default:
-		return 0;
+		*pout = 24728;
+		divisor = 31;
 	}
 
 	_clock_sdmmc_table[2 * id] = val;

bootloader/soc/i2c.c

@@ -129,7 +129,7 @@ int i2c_send_byte(u32 idx, u32 x, u32 y, u8 b)
 
 u8 i2c_recv_byte(u32 idx, u32 x, u32 y)
 {
-	u8 tmp;
+	u8 tmp = 0;
 	i2c_recv_buf_small(&tmp, 1, idx, x, y);
 	return tmp;
 }