[Bug] Uninit issue

[SoftSec-Tech]

RT-Thread Version

187e69a

Hardware Type/Architectures

stm32

Develop Toolchain

GCC

Describe the bug

1. Uninit issue in line 440 https://github.com/RT-Thread/rt-thread/blob/master/bsp/stm32/libraries/HAL_Drivers/drivers/drv_gpio.c
2. Detected by Static Analysis tool - StatiCode,
   
   As in the screen shot, since there is the possibility that in step 7 - switch goes into default, so the GPIO_InitStruct.Mode is uninited, but it is used in the HAL_GPIO_INIT, thus caused an Uninit issue.

Other additional context

No response