crypto: qat - change return value in adf_cfg_key_val_get()

If a key is not found in the internal key value storage, return -ENODATA
instead of -1 that is treated as -EPERM and may confuse.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/qat/qat_common/adf_cfg.c

@@ -196,7 +196,7 @@ static int adf_cfg_key_val_get(struct adf_accel_dev *accel_dev,
 		memcpy(val, keyval->val, ADF_CFG_MAX_VAL_LEN_IN_BYTES);
 		return 0;
 	}
-	return -1;
+	return -ENODATA;
 }
 
 /**