sd/milkymist-memcard: Plug minor memory leak in realize

milkymist_memcard_realize() leaks an Error object when realization of
its "sd-card" device fails.  Quite harmless, since we only ever
realize this once, in milkymist_init() via milkymist_memcard_create().

Plug the leak.

Fixes: 3d0369ba499866cc6a839f71212d97876500762d
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: Michael Walle <michael@walle.cc>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200630090351.1247703-10-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

diff --git a/hw/sd/milkymist-memcard.c b/hw/sd/milkymist-memcard.c
index 482e97191e7063c9d22cdf03b1fa10d39ea20c99..afdb8aa0c067b8f8138e742d6052712c6385ed7a 100644 (file)
--- a/hw/sd/milkymist-memcard.c
+++ b/hw/sd/milkymist-memcard.c
@@ -280,9 +280,8 @@ static void milkymist_memcard_realize(DeviceState *dev, Error **errp)
     blk = dinfo ? blk_by_legacy_dinfo(dinfo) : NULL;
     carddev = qdev_new(TYPE_SD_CARD);
     qdev_prop_set_drive(carddev, "drive", blk);
-    qdev_realize_and_unref(carddev, BUS(&s->sdbus), &err);
-    if (err) {
-        error_setg(errp, "failed to init SD card: %s", error_get_pretty(err));
+    if (!qdev_realize_and_unref(carddev, BUS(&s->sdbus), &err)) {
+        error_propagate_prepend(errp, err, "failed to init SD card: %s");
         return;
     }
     s->enabled = blk && blk_is_inserted(blk);