drivers: rmnet_shs: Reset hstat node correctly

Previously hstat node was not being cleared correctly.
This change correctly resets segmentation field to prevent
the stale field from being used on a recycle.

CRs-Fixed: 2699690
Change-Id: Ie9d6b5f64d2e94d8a8c3fb99fdcee1b13ae2ec6d
Acked-by: Raul Martinez <mraul@qti.qualcomm.com>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>