[PATCH] crypto: rockchip - drop redundant crypto_skcipher_ivsize() calls

[Karina Yankevich]

The function already initialized the ivsize variable 
at the point of declaration, let's use it instead of 
calling crypto_skcipher_ivsize() extra couple times.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 57d67c6e8219 ("crypto: rockchip - rework by using crypto_engine")
Signed-off-by: Karina Yankevich <k.yankevich@xxxxxx>
Reviewed-by: Sergey Shtylyov <s.shtylyov@xxxxxx>
---
 drivers/crypto/rockchip/rk3288_crypto_skcipher.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/crypto/rockchip/rk3288_crypto_skcipher.c b/drivers/crypto/rockchip/rk3288_crypto_skcipher.c
index 9393e10671c2..e80f9148c012 100644
--- a/drivers/crypto/rockchip/rk3288_crypto_skcipher.c
+++ b/drivers/crypto/rockchip/rk3288_crypto_skcipher.c
@@ -321,8 +321,7 @@ static int rk_cipher_run(struct crypto_engine *engine, void *async_req)
 	algt->stat_req++;
 	rkc->nreq++;
 
-	ivsize = crypto_skcipher_ivsize(tfm);
-	if (areq->iv && crypto_skcipher_ivsize(tfm) > 0) {
+	if (areq->iv && ivsize > 0) {
 		if (rctx->mode & RK_CRYPTO_DEC) {
 			offset = areq->cryptlen - ivsize;
 			scatterwalk_map_and_copy(rctx->backup_iv, areq->src,
-- 
2.34.1