crypto: tcrypt - Fix multibuffer skcipher speed test mem leak

crypto: tcrypt - Fix multibuffer skcipher speed test mem leak

[ Upstream commit dafb82db900cf7d7e66a4baa2928065c84dd7860 ]

In the past, the data for mb-skcipher test has been allocated
twice, that means the first allcated memory area is without
free, which may cause a potential memory leakage. So this
patch is to remove one allocation to fix this error.

Fixes: 4f414ad2b38c ("crypto: tcrypt - add multibuf skcipher...")
Signed-off-by: Zhang Yiqun <zhangyiqun@phytium.com.cn>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>