CVE-2023-52528 net: usb: smsc75xx: Fix uninit-value access in __smsc75xx_read_reg

In the Linux kernel, the following vulnerability has been resolved: net: usb: smsc75xx: Fix uninit-value access in smsc75xxreadreg syzbot reported the following uninit-value access issue: ===================================================== BUG: KMSAN: uninit-value in smsc75xxwaitready...