error: Move ERRP_GUARD() to the beginning of the function

include/qapi/error.h advises to put ERRP_GUARD() right at the
beginning of the function, because only then can it guard the whole
function.  Clean up the few spots disregarding the advice.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-4-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/arm/armsse.c

@@ -900,6 +900,7 @@ static qemu_irq armsse_get_common_irq_in(ARMSSE *s, int irqno)
 
 static void armsse_realize(DeviceState *dev, Error **errp)
 {
+    ERRP_GUARD();
     ARMSSE *s = ARM_SSE(dev);
     ARMSSEClass *asc = ARM_SSE_GET_CLASS(dev);
     const ARMSSEInfo *info = asc->info;
@@ -914,8 +915,6 @@ static void armsse_realize(DeviceState *dev, Error **errp)
     DeviceState *dev_splitter;
     uint32_t addr_width_max;
 
-    ERRP_GUARD();
-
     if (!s->board_memory) {
         error_setg(errp, "memory property was not set");
         return;

hw/core/machine.c

@@ -554,12 +554,11 @@ static void machine_get_mem(Object *obj, Visitor *v, const char *name,
 static void machine_set_mem(Object *obj, Visitor *v, const char *name,
                             void *opaque, Error **errp)
 {
+    ERRP_GUARD();
     MachineState *ms = MACHINE(obj);
     MachineClass *mc = MACHINE_GET_CLASS(obj);
     MemorySizeConfiguration *mem;
 
-    ERRP_GUARD();
-
     if (!visit_type_MemorySizeConfiguration(v, name, &mem, errp)) {
         return;
     }

hw/virtio/vhost-vdpa.c

@@ -963,6 +963,7 @@ static bool vhost_vdpa_svq_map_rings(struct vhost_dev *dev,
                                      struct vhost_vring_addr *addr,
                                      Error **errp)
 {
+    ERRP_GUARD();
     DMAMap device_region, driver_region;
     struct vhost_vring_addr svq_addr;
     struct vhost_vdpa *v = dev->opaque;
@@ -971,7 +972,6 @@ static bool vhost_vdpa_svq_map_rings(struct vhost_dev *dev,
     size_t avail_offset;
     bool ok;
 
-    ERRP_GUARD();
     vhost_svq_get_vring_addr(svq, &svq_addr);
 
     driver_region = (DMAMap) {

iothread.c

@@ -155,8 +155,8 @@ static void iothread_init_gcontext(IOThread *iothread)
 
 static void iothread_set_aio_context_params(EventLoopBase *base, Error **errp)
 {
-    IOThread *iothread = IOTHREAD(base);
     ERRP_GUARD();
+    IOThread *iothread = IOTHREAD(base);
 
     if (!iothread->ctx) {
         return;

monitor/qmp-cmds.c

@@ -474,9 +474,9 @@ static bool invoke_stats_cb(StatsCallbacks *entry,
                             StatsFilter *filter, StatsRequest *request,
                             Error **errp)
 {
+    ERRP_GUARD();
     strList *targets = NULL;
     strList *names = NULL;
-    ERRP_GUARD();
 
     if (request) {
         if (request->provider != entry->provider) {
@@ -541,9 +541,9 @@ StatsSchemaList *qmp_query_stats_schemas(bool has_provider,
                                          StatsProvider provider,
                                          Error **errp)
 {
+    ERRP_GUARD();
     StatsSchemaList *stats_results = NULL;
     StatsCallbacks *entry;
-    ERRP_GUARD();
 
     QTAILQ_FOREACH(entry, &stats_callbacks, next) {
         if (!has_provider || provider == entry->provider) {