[PATCH] ipsec: remove unneccessary null check

[Zhang, Fan]

On 1/13/2023 6:44 PM, Stephen Hemminger wrote:
> 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)
Acked-by: Fan Zhang <fanzhang.oss at gmail.com>