The variable err is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 static int img_hash_dma_init(struct img_hash_dev *hdev)
 {
        struct dma_slave_config dma_conf;
-       int err = -EINVAL;
+       int err;
 
        hdev->dma_lch = dma_request_chan(hdev->dev, "tx");
        if (IS_ERR(hdev->dma_lch)) {