usb: usb_create() can't fail, drop useless error handling

Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

hw/usb/bus.c

@@ -320,10 +320,6 @@ USBDevice *usb_create_simple(USBBus *bus, const char *name)
     USBDevice *dev = usb_create(bus, name);
     int rc;
 
-    if (!dev) {
-        error_report("Failed to create USB device '%s'", name);
-        return NULL;
-    }
     rc = qdev_init(&dev->qdev);
     if (rc < 0) {
         error_report("Failed to initialize USB device '%s'", name);

hw/usb/dev-bluetooth.c

@@ -530,14 +530,10 @@ static USBDevice *usb_bt_init(USBBus *bus, const char *cmdline)
     } else {
         hci = bt_new_hci(qemu_find_bt_vlan(0));
     }
-
     if (!hci)
         return NULL;
+
     dev = usb_create(bus, name);
-    if (!dev) {
-        error_report("Failed to create USB device '%s'", name);
-        return NULL;
-    }
     s = DO_UPCAST(struct USBBtState, dev, dev);
     s->hci = hci;
     if (qdev_init(&dev->qdev) < 0) {

hw/usb/dev-network.c

@@ -1405,9 +1405,6 @@ static USBDevice *usb_net_init(USBBus *bus, const char *cmdline)
     }
 
     dev = usb_create(bus, "usb-net");
-    if (!dev) {
-        return NULL;
-    }
     qdev_set_nic_properties(&dev->qdev, &nd_table[idx]);
     qdev_init_nofail(&dev->qdev);
     return dev;

hw/usb/dev-serial.c

@@ -544,9 +544,6 @@ static USBDevice *usb_serial_init(USBBus *bus, const char *filename)
         return NULL;
 
     dev = usb_create(bus, "usb-serial");
-    if (!dev) {
-        return NULL;
-    }
     qdev_prop_set_chr(&dev->qdev, "chardev", cdrv);
     if (vendorid)
         qdev_prop_set_uint16(&dev->qdev, "vendorid", vendorid);

hw/usb/dev-storage.c

@@ -706,9 +706,6 @@ static USBDevice *usb_msd_init(USBBus *bus, const char *filename)
 
     /* create guest device */
     dev = usb_create(bus, "usb-storage");
-    if (!dev) {
-        return NULL;
-    }
     if (qdev_prop_set_drive(&dev->qdev, "drive",
                             blk_by_legacy_dinfo(dinfo)) < 0) {
         object_unparent(OBJECT(dev));