fix: set finalized only after finalize completes successfully

Move `self.finalized = true` to the end of `finalize()` so an error or panic during IR dump, verification, or optimization leaves the compiler retryable instead of stuck in a finalized state.

Author: cuiweixie

crates/revmc/src/compiler/mod.rs

@@ -595,7 +595,6 @@ impl<B: Backend> EvmCompiler<B> {
         if self.finalized {
             return Ok(());
         }
-        self.finalized = true;
 
         let finalize_start = Instant::now();
 
@@ -642,6 +641,7 @@ impl<B: Backend> EvmCompiler<B> {
                 }
             }
         }
+        self.finalized = true;
 
         let finalize_total = &self.remarks.finalize_total;
         finalize_total.set(finalize_total.get() + finalize_start.elapsed());