EDAC, altera: Fix error handling path in altr_edac_device_probe()

Return the proper error value if devm_ioremap() fails (and not 0).

Signed-off-by: Christophe JAILLET <[e-mail]>
Acked-by: Thor Thayer <[e-mail]>
Cc: linux-edac <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
[ Massage commit message. ]
Signed-off-by: Borislav Petkov <[e-mail]>

drivers/edac/altera_edac.c

···
 	drvdata->edac_dev_name = ecc_name;
 
 	drvdata->base = devm_ioremap(&pdev->dev, r->start, resource_size(r));
-	if (!drvdata->base)
+	if (!drvdata->base) {
+		res = -ENOMEM;
 		goto fail1;
+	}
 
 	/* Get driver specific data for this EDAC device */
 	drvdata->data = of_match_node(altr_edac_device_of_match, np)->data;