If we want append hint to errp, we must use ERRP_FUNCTION_BEGIN macro.
Otherwise hint will not be appended in case of errp == &fatal_err
(program will exit before error_append_hint() call). Fix such cases.

This commit (together with its neighbors) was generated by

git grep -l 'error_append_hint(errp' | while read f; do \
spatch --sp-file scripts/coccinelle/fix-error_append_hint-usage.cocci \
--in-place $f; done

and then

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

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

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/ppc/mac_newworld.c | 1 +
 hw/ppc/spapr.c        | 1 +
 hw/ppc/spapr_pci.c    | 1 +
 target/ppc/kvm.c      | 2 ++
 4 files changed, 5 insertions(+)

diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
index c5bbcc7433..939fdd258f 100644
--- a/hw/ppc/mac_newworld.c
+++ b/hw/ppc/mac_newworld.c
@@ -609,6 +609,7 @@ static char *core99_get_via_config(Object *obj, Error **errp)
 
 static void core99_set_via_config(Object *obj, const char *value, Error **errp)
 {
+    ERRP_FUNCTION_BEGIN();
     Core99MachineState *cms = CORE99_MACHINE(obj);
 
     if (!strcmp(value, "cuda")) {
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 08a2a5a770..d0dd8aaa22 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -4330,6 +4330,7 @@ int spapr_get_vcpu_id(PowerPCCPU *cpu)
 
 void spapr_set_vcpu_id(PowerPCCPU *cpu, int cpu_index, Error **errp)
 {
+    ERRP_FUNCTION_BEGIN();
     SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
     MachineState *ms = MACHINE(spapr);
     int vcpu_id;
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index 7b71ad7c74..172d6689d0 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -1817,6 +1817,7 @@ static void spapr_phb_destroy_msi(gpointer opaque)
 
 static void spapr_phb_realize(DeviceState *dev, Error **errp)
 {
+    ERRP_FUNCTION_BEGIN();
     /* We don't use SPAPR_MACHINE() in order to exit gracefully if the user
      * tries to add a sPAPR PHB to a non-pseries machine.
      */
diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
index 8c5b1f25cc..aacfe194e2 100644
--- a/target/ppc/kvm.c
+++ b/target/ppc/kvm.c
@@ -237,6 +237,7 @@ static int kvm_booke206_tlb_init(PowerPCCPU *cpu)
 #if defined(TARGET_PPC64)
 static void kvm_get_smmu_info(struct kvm_ppc_smmu_info *info, Error **errp)
 {
+    ERRP_FUNCTION_BEGIN();
     int ret;
 
     assert(kvm_state != NULL);
@@ -2073,6 +2074,7 @@ int kvmppc_set_smt_threads(int smt)
 
 void kvmppc_hint_smt_possible(Error **errp)
 {
+    ERRP_FUNCTION_BEGIN();
     int i;
     GString *g;
     char *s;
-- 
2.21.0