crypto: sa2ul - Fix pm_runtime_get_sync() error checking

The pm_runtime_get_sync() function returns either 0 or 1 on success but
this code treats a return of 1 as a failure.

Fixes: 7694b6ca ("crypto: sa2ul - Add crypto driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/sa2ul.c

@@ -2327,7 +2327,7 @@ static int sa_ul_probe(struct platform_device *pdev)
 
 	pm_runtime_enable(dev);
 	ret = pm_runtime_get_sync(dev);
-	if (ret) {
+	if (ret < 0) {
 		dev_err(&pdev->dev, "%s: failed to get sync: %d\n", __func__,
 			ret);
 		return ret;