crypto: omap - Allocate OMAP_CRYPTO_FORCE_COPY scatterlists correctly

The existing allocation of scatterlists in omap_crypto_copy_sg_lists()
was allocating an array of scatterlist pointers, not scatterlist objects,
resulting in a 4x too small allocation.

Use sizeof(*new_sg) to get the correct object size.

Fixes: 74ed87e ("crypto: omap - add base support library for common routines")
Signed-off-by: Kees Cook <kees@kernel.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Author: kees

drivers/crypto/omap-crypto.c

@@ -21,7 +21,7 @@ static int omap_crypto_copy_sg_lists(int total, int bs,
 	struct scatterlist *tmp;
 
 	if (!(flags & OMAP_CRYPTO_FORCE_SINGLE_ENTRY)) {
-		new_sg = kmalloc_array(n, sizeof(*sg), GFP_KERNEL);
+		new_sg = kmalloc_array(n, sizeof(*new_sg), GFP_KERNEL);
 		if (!new_sg)
 			return -ENOMEM;