crypto: stm32 - fix MDMAT condition

If IP has MDMAT support, set or reset the bit MDMAT in Control Register.

Fixes: b56403a2 ("crypto: stm32/hash - Support Ux500 hash")
Cc: stable@vger.kernel.org
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Bourgoin <thomas.bourgoin@foss.st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/stm32/stm32-hash.c

@@ -544,7 +544,7 @@ static int stm32_hash_xmit_dma(struct stm32_hash_dev *hdev,
 
 	reg = stm32_hash_read(hdev, HASH_CR);
 
-	if (!hdev->pdata->has_mdmat) {
+	if (hdev->pdata->has_mdmat) {
 		if (mdma)
 			reg |= HASH_CR_MDMAT;
 		else