rust: do not inline do_init_io

This is now possible since the hwcore integration tests do not
link the system crate anymore.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250908105005.2119297-34-pbonzini@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

rust/system/src/memory.rs

@@ -136,11 +136,6 @@ unsafe impl Send for MemoryRegion {}
 unsafe impl Sync for MemoryRegion {}
 
 impl MemoryRegion {
-    // inline to ensure that it is not included in tests, which only
-    // link to hwcore and qom.  FIXME: inlining is actually the opposite
-    // of what we want, since this is the type-erased version of the
-    // init_io function below.  Look into splitting the qemu_api crate.
-    #[inline(always)]
     unsafe fn do_init_io(
         slot: *mut bindings::MemoryRegion,
         owner: *mut bindings::Object,