qcacld-3.0: Fix TSO seg cookie init crash

In one of the recent fixes, we are setting the TSO seg contents to zero
when the segment is added back to the free list. The segment cookie is
not re-initalized at this point. Hence, when this segment is
re-allocated, it fails the cookie check and there is a system crash.

Fix the issue by reinitializing the segment cookie after zero-ing out
its contents.

Change-Id: I7947e3ce4f80f1b19ebf5ef73ff75dee19ec7364
CRs-Fixed: 2011786

core/dp/txrx/ol_tx_desc.c

@@ -825,6 +825,7 @@ void ol_tso_free_segment(struct ol_txrx_pdev_t *pdev,
 	qdf_mem_zero(tso_seg, sizeof(*tso_seg));
 	tso_seg->next = pdev->tso_seg_pool.freelist;
 	tso_seg->on_freelist = 1;
+	tso_seg->cookie = TSO_SEG_MAGIC_COOKIE;
 	pdev->tso_seg_pool.freelist = tso_seg;
 	pdev->tso_seg_pool.num_free++;
 	qdf_spin_unlock_bh(&pdev->tso_seg_pool.tso_mutex);