memory: add parameter errp to memory_region_init_rom_device

Add parameter errp to memory_region_init_rom_device and update all call
sites to propagate the error.

Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
[Propagate the error out of realize. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/memory.c b/memory.c
index a2c8f1e..30f77b2 100644
--- a/memory.c
+++ b/memory.c
@@ -1204,7 +1204,8 @@
                                    const MemoryRegionOps *ops,
                                    void *opaque,
                                    const char *name,
-                                   uint64_t size)
+                                   uint64_t size,
+                                   Error **errp)
 {
     memory_region_init(mr, owner, name, size);
     mr->ops = ops;
@@ -1212,7 +1213,7 @@
     mr->terminates = true;
     mr->rom_device = true;
     mr->destructor = memory_region_destructor_rom_device;
-    mr->ram_addr = qemu_ram_alloc(size, mr, &error_abort);
+    mr->ram_addr = qemu_ram_alloc(size, mr, errp);
 }
 
 void memory_region_init_iommu(MemoryRegion *mr,