net: macb: fix use after free on rmmod

In the Linux kernel, the following vulnerability has been resolved:

net: macb: fix use after free on rmmod

plat_dev->dev->platform_data is released by platform_device_unregister(),

use of pclk and hclk is a use-after-free. Since device unregister won't

need a clk device we adjust the function call sequence to fix this issue.

[ 31.261225] BUG: KASAN: use-after-free in macb_remove+0x77/0xc6 [macb_pci]

[ 31.275563] Freed by task 306:

[ 30.276782] platform_device_release+0x25/0x80