Staging: sxg: Receive code and data structure cleanups

* Cleanup in recevive buffer structure
* Drop receive data buffer as its not needed with use of skbs
* Fix error code paths in receive skb failures

Signed-off-by: LinSysSoft Sahara Team <saharaproj@linsyssoft.com>
Signed-off-by: Christopher Harrer <charrer@alacritech.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

3 files changed