If we want to add some info to errp (by error_prepend() or
error_append_hint()), we must use the ERRP_AUTO_PROPAGATE macro.
Otherwise, this info will not be added when errp == &fatal_err
(the program will exit prior to the error_append_hint() or
error_prepend() call).  Fix such cases.

This commit (together with its neighbors) was generated by

git grep -l 'error_\(append_hint\|prepend\)(errp' | while read f; do \
spatch --sp-file scripts/coccinelle/fix-error-add-info.cocci \
--in-place $f; done

and then

./python/commit-per-subsystem.py MAINTAINERS "$(< auto-msg)"

(auto-msg was a file with this commit message)

and then by hand, for not maintained changed files:

git commit -m "<SUB-SYSTEM>: $(< auto-msg)" <FILES>

Still, for backporting it may be more comfortable to use only the first
command and then do one huge commit.

Reported-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 hw/arm/msf2-soc.c | 1 +
 hw/arm/virt.c     | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/hw/arm/msf2-soc.c b/hw/arm/msf2-soc.c
index 008fd9327a..b76f45657e 100644
--- a/hw/arm/msf2-soc.c
+++ b/hw/arm/msf2-soc.c
@@ -85,6 +85,7 @@ static void m2sxxx_soc_initfn(Object *obj)
 
 static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     MSF2State *s = MSF2_SOC(dev_soc);
     DeviceState *dev, *armv7m;
     SysBusDevice *busdev;
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index d74538b021..ce2e57fd59 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -1793,6 +1793,7 @@ static char *virt_get_gic_version(Object *obj, Error **errp)
 
 static void virt_set_gic_version(Object *obj, const char *value, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     VirtMachineState *vms = VIRT_MACHINE(obj);
 
     if (!strcmp(value, "3")) {
@@ -1825,6 +1826,7 @@ static char *virt_get_iommu(Object *obj, Error **errp)
 
 static void virt_set_iommu(Object *obj, const char *value, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     VirtMachineState *vms = VIRT_MACHINE(obj);
 
     if (!strcmp(value, "smmuv3")) {
-- 
2.21.0