uio: uio_aec: use devm_kzalloc() for uio_info object

The uio_info object is free'd last, so it's life-time is tied PCI device
object. Using devm_kzalloc() cleans up the error path a bit and the exit
path.

Signed-off-by: Alexandru Ardelean <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/uio/uio_aec.c

···
 	struct uio_info *info;
 	int ret;
 
-	info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
+	info = devm_kzalloc(&pdev->dev, sizeof(struct uio_info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
 
 	if (pci_enable_device(pdev))
-		goto out_free;
+		return -ENODEV;
 
 	if (pci_request_regions(pdev, "aectc"))
 		goto out_disable;
···
 	pci_release_regions(pdev);
 out_disable:
 	pci_disable_device(pdev);
-out_free:
-	kfree(info);
 	return -ENODEV;
 }
 
···
 	pci_release_regions(pdev);
 	pci_disable_device(pdev);
 	iounmap(info->priv);
-
-	kfree(info);
 }
 
 static struct pci_driver pci_driver = {