[PATCH v4 01/10] hw/mem/cxl_type3: Improve error handling in realize()

[Jonathan Cameron via <qemu-devel@nongnu.org>]

msix_init_exclusive_bar() can fail, so if it does cleanup the address space.

Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Gregory Price <gregory.price@memverge.com>
Tested-by: Gregory Price <gregory.price@memverge.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 hw/mem/cxl_type3.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index dae4fd89ca..252822bd82 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -401,7 +401,7 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp)
     MemoryRegion *mr = &regs->component_registers;
     uint8_t *pci_conf = pci_dev->config;
     unsigned short msix_num = 1;
-    int i;
+    int i, rc;
 
     if (!cxl_setup_memory(ct3d, errp)) {
         return;
@@ -438,7 +438,10 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp)
                      &ct3d->cxl_dstate.device_registers);
 
     /* MSI(-X) Initailization */
-    msix_init_exclusive_bar(pci_dev, msix_num, 4, NULL);
+    rc = msix_init_exclusive_bar(pci_dev, msix_num, 4, NULL);
+    if (rc) {
+        goto err_address_space_free;
+    }
     for (i = 0; i < msix_num; i++) {
         msix_vector_use(pci_dev, i);
     }
@@ -450,6 +453,11 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp)
     cxl_cstate->cdat.free_cdat_table = ct3_free_cdat_table;
     cxl_cstate->cdat.private = ct3d;
     cxl_doe_cdat_init(cxl_cstate, errp);
+    return;
+
+err_address_space_free:
+    address_space_destroy(&ct3d->hostmem_as);
+    return;
 }
 
 static void ct3_exit(PCIDevice *pci_dev)
-- 
2.37.2