net/cnxk: fix uninitialized variable

[ upstream commit 7feaf39ce6047ca346dbf141670515b4be4c2fbf ]

Shift may be uninitialized in certain case, initialize it.

Fixes: 55bfac7 ("net/cnxk: support Tx security offload on cn10k")

Signed-off-by: Akhil Goyal <gakhil@marvell.com>

drivers/net/cnxk/cn10k_tx.h

@@ -1496,13 +1496,13 @@ cn10k_nix_xmit_pkts_vector(void *tx_queue, struct rte_mbuf **tx_pkts,
 	uint64x2_t sgdesc01_w1, sgdesc23_w1;
 	struct cn10k_eth_txq *txq = tx_queue;
 	rte_iova_t io_addr = txq->io_addr;
+	uint8_t lnum, shift = 0, loff;
 	uintptr_t laddr = txq->lmt_base;
 	uint8_t c_lnum, c_shft, c_loff;
 	uint64x2_t ltypes01, ltypes23;
 	uint64x2_t xtmp128, ytmp128;
 	uint64x2_t xmask01, xmask23;
 	uintptr_t c_laddr = laddr;
-	uint8_t lnum, shift, loff;
 	rte_iova_t c_io_addr;
 	uint64_t sa_base;
 	union wdata {