staging: et131x: Remove useless assignment to NULL
staging: et131x: Remove useless assignment to NULL

The stack variable skb is no longer used after it's set to
NULL. Don't set it to NULL.

Reported-by: Dan Carpenter <ff341aa343d564f9e53e9dcb6996be8c04859a66@oracle.com>
Signed-off-by: Mark Einon <78d8af80769b0cbc00e314928418dc93597f13ae@gmail.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs