Call the DT sanitize routine ealier

... before data from it is used.

Bug: 249054080
Test: TH

Change-Id: I2a416a74c4b85e9662848e1c9389b0109dbe3108
diff --git a/pvmfw/src/entry.rs b/pvmfw/src/entry.rs
index 106a4ef..89f2637 100644
--- a/pvmfw/src/entry.rs
+++ b/pvmfw/src/entry.rs
@@ -109,6 +109,7 @@
             RebootReason::InvalidFdt
         })?;
 
+        fdt::sanitize_device_tree(fdt)?;
         debug!("Fdt passed validation!");
 
         let memory_range = fdt