uio: add missing error codes

My static checker complains that "ret" could be uninitialized at the
end, which is true but it's more likely that it would be set to zero.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index bcc1fc027311335cbd6e56583777c05684ac05e1..fba021f5736afdee41fd914da4648e8bf71874b6 100644 (file)
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -271,12 +271,16 @@ static int uio_dev_add_attributes(struct uio_device *idev)
                        map_found = 1;
                        idev->map_dir = kobject_create_and_add("maps",
                                                        &idev->dev->kobj);
-                       if (!idev->map_dir)
+                       if (!idev->map_dir) {
+                               ret = -ENOMEM;
                                goto err_map;
+                       }
                }
                map = kzalloc(sizeof(*map), GFP_KERNEL);
-               if (!map)
+               if (!map) {
+                       ret = -ENOMEM;
                        goto err_map_kobj;
+               }
                kobject_init(&map->kobj, &map_attr_type);
                map->mem = mem;
                mem->map = map;
@@ -296,12 +300,16 @@ static int uio_dev_add_attributes(struct uio_device *idev)
                        portio_found = 1;
                        idev->portio_dir = kobject_create_and_add("portio",
                                                        &idev->dev->kobj);
-                       if (!idev->portio_dir)
+                       if (!idev->portio_dir) {
+                               ret = -ENOMEM;
                                goto err_portio;
+                       }
                }
                portio = kzalloc(sizeof(*portio), GFP_KERNEL);
-               if (!portio)
+               if (!portio) {
+                       ret = -ENOMEM;
                        goto err_portio_kobj;
+               }
                kobject_init(&portio->kobj, &portio_attr_type);
                portio->port = port;
                port->portio = portio;