pci: pci_add_option_rom(): refactor: use g_autofree for path variable

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230515125229.44836-3-vsementsov@yandex-team.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>

hw/pci/pci.c

@@ -2307,7 +2307,7 @@ static void pci_add_option_rom(PCIDevice *pdev, bool is_default_rom,
                                Error **errp)
 {
     int64_t size;
-    char *path;
+    g_autofree char *path = NULL;
     void *ptr;
     char name[32];
     const VMStateDescription *vmsd;
@@ -2349,24 +2349,20 @@ static void pci_add_option_rom(PCIDevice *pdev, bool is_default_rom,
     size = get_image_size(path);
     if (size < 0) {
         error_setg(errp, "failed to find romfile \"%s\"", pdev->romfile);
-        g_free(path);
         return;
     } else if (size == 0) {
         error_setg(errp, "romfile \"%s\" is empty", pdev->romfile);
-        g_free(path);
         return;
     } else if (size > 2 * GiB) {
         error_setg(errp, "romfile \"%s\" too large (size cannot exceed 2 GiB)",
                    pdev->romfile);
-        g_free(path);
         return;
     }
     if (pdev->romsize != -1) {
         if (size > pdev->romsize) {
             error_setg(errp, "romfile \"%s\" (%u bytes) "
                        "is too large for ROM size %u",
                        pdev->romfile, (uint32_t)size, pdev->romsize);
-            g_free(path);
             return;
         }
     } else {
@@ -2384,10 +2380,8 @@ static void pci_add_option_rom(PCIDevice *pdev, bool is_default_rom,
     ptr = memory_region_get_ram_ptr(&pdev->rom);
     if (load_image_size(path, ptr, size) < 0) {
         error_setg(errp, "failed to load romfile \"%s\"", pdev->romfile);
-        g_free(path);
         return;
     }
-    g_free(path);
 
     if (is_default_rom) {
         /* Only the default rom images will be patched (if needed). */