CVE-2022-50830 auxdisplay: hd44780: Fix potential memory leak in hd44780_remove()

In the Linux kernel, the following vulnerability has been resolved: auxdisplay: hd44780: Fix potential memory leak in hd44780remove hd44780probe allocates a memory chunk for hd with kzalloc and makes "lcd-drvdata-hd44780" point to it. When we call hd44780remove, we should release all relevant...