usbnet: ipheth: fix risk of NULL pointer deallocation

The cleanup precedure in ipheth_probe will attempt to free a
NULL pointer in dev->ctrl_buf if the memory allocation for
this buffer is not successful. While kfree ignores NULL pointers,
and the existing code is safe, it is a better design to rearrange
the goto labels and avoid this.

Signed-off-by: Georgi Valkov <gvalkov@gmail.com>
Signed-off-by: Foster Snowhill <forst@pen.gy>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Georgi Valkov 2023-06-07 15:56:59 +02:00 • committed by David S. Miller
commit 2203718c2f