qdev: Use returned bool to check for failure, Coccinelle part

The previous commit enables conversion of

    qdev_prop_set_drive_err(..., &err);
    if (err) {
    ...
    }

to

    if (!qdev_prop_set_drive_err(..., errp)) {
    ...
    }

Coccinelle script:

    @@
    identifier fun = qdev_prop_set_drive_err;
    expression list args;
    typedef Error;
    Error *err;
    @@
    -    fun(args, &err);
    -    if (err)
    +    if (!fun(args, &err))
         {
             ...
         }

One line break tidied up manually.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200707160613.848843-33-armbru@redhat.com>

hw/scsi/scsi-bus.c

@@ -277,8 +277,7 @@ SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
     if (serial && object_property_find(OBJECT(dev), "serial", NULL)) {
         qdev_prop_set_string(dev, "serial", serial);
     }
-    qdev_prop_set_drive_err(dev, "drive", blk, &err);
-    if (err) {
+    if (!qdev_prop_set_drive_err(dev, "drive", blk, &err)) {
         error_propagate(errp, err);
         object_unparent(OBJECT(dev));
         return NULL;

hw/sd/sd.c

@@ -706,8 +706,7 @@ SDState *sd_init(BlockBackend *blk, bool is_spi)
 
     obj = object_new(TYPE_SD_CARD);
     dev = DEVICE(obj);
-    qdev_prop_set_drive_err(dev, "drive", blk, &err);
-    if (err) {
+    if (!qdev_prop_set_drive_err(dev, "drive", blk, &err)) {
         error_reportf_err(err, "sd_init failed: ");
         return NULL;
     }

hw/sd/ssi-sd.c

@@ -254,9 +254,8 @@ static void ssi_sd_realize(SSISlave *d, Error **errp)
     dinfo = drive_get_next(IF_SD);
     carddev = qdev_new(TYPE_SD_CARD);
     if (dinfo) {
-        qdev_prop_set_drive_err(carddev, "drive", blk_by_legacy_dinfo(dinfo),
-                                &err);
-        if (err) {
+        if (!qdev_prop_set_drive_err(carddev, "drive",
+                                     blk_by_legacy_dinfo(dinfo), &err)) {
             goto fail;
         }
     }