[PATCH] ipsec: remove unneccessary null check

[Stephen Hemminger]

The function rte_ring_free() accepts NULL as vaild input
like free() and other functions.

Found with null_free_check.cocci.

Fixes: 16d6ebb65d59 ("crypto/ipsec_mb: fix null checks")
Cc: kai.ji at intel.com
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
 drivers/crypto/ipsec_mb/ipsec_mb_ops.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/crypto/ipsec_mb/ipsec_mb_ops.c b/drivers/crypto/ipsec_mb/ipsec_mb_ops.c
index 71e02cd0513d..3e52f9567401 100644
--- a/drivers/crypto/ipsec_mb/ipsec_mb_ops.c
+++ b/drivers/crypto/ipsec_mb/ipsec_mb_ops.c
@@ -139,15 +139,12 @@ int
 ipsec_mb_qp_release(struct rte_cryptodev *dev, uint16_t qp_id)
 {
 	struct ipsec_mb_qp *qp = dev->data->queue_pairs[qp_id];
-	struct rte_ring *r = NULL;
 
 	if (!qp)
 		return 0;
 
 	if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
-		r = rte_ring_lookup(qp->name);
-		if (r)
-			rte_ring_free(r);
+		rte_ring_free(rte_ring_lookup(qp->name));
 
 #if IMB_VERSION(1, 1, 0) > IMB_VERSION_NUM
 		if (qp->mb_mgr)
-- 
2.39.0