VolumeWii: Check SupportsReadWiiDecrypted before m_encrypted

Fixes using DirectoryBlob on extracted games that were unencrypted
prior to being extracted.

(One day I'll make DirectoryBlob actually support raw reads and then
the order of these two won't matter...)

Source/Core/DiscIO/VolumeWii.cpp

@@ -162,6 +162,9 @@ bool VolumeWii::Read(u64 offset, u64 length, u8* buffer, const Partition& partit
   if (partition == PARTITION_NONE)
     return m_reader->Read(offset, length, buffer);
 
+  if (m_reader->SupportsReadWiiDecrypted())
+    return m_reader->ReadWiiDecrypted(offset, length, buffer, partition.offset);
+
   auto it = m_partitions.find(partition);
   if (it == m_partitions.end())
     return false;
@@ -173,9 +176,6 @@ bool VolumeWii::Read(u64 offset, u64 length, u8* buffer, const Partition& partit
                           buffer);
   }
 
-  if (m_reader->SupportsReadWiiDecrypted())
-    return m_reader->ReadWiiDecrypted(offset, length, buffer, partition.offset);
-
   mbedtls_aes_context* aes_context = partition_details.key->get();
   if (!aes_context)
     return false;