Don't set encoder component role while we query decoders

bug - 2558515

Change-Id: I29683507d234d963994c782c07508034ea807739
diff --git a/media/libstagefright/OMXCodec.cpp b/media/libstagefright/OMXCodec.cpp
index b9d6fbc..873c2aa 100644
--- a/media/libstagefright/OMXCodec.cpp
+++ b/media/libstagefright/OMXCodec.cpp
@@ -3040,7 +3040,7 @@
             continue;
         }
 
-        OMXCodec::setComponentRole(omx, node, queryDecoders, mime);
+        OMXCodec::setComponentRole(omx, node, !queryDecoders, mime);
 
         results->push();
         CodecCapabilities *caps = &results->editItemAt(results->size() - 1);