Change the operation to get address explicit

Change-Id: I617bba8c3f5913d3ee0d248936d344018e29591e
diff --git a/av1/encoder/x86/ml_sse3.c b/av1/encoder/x86/ml_sse3.c
index 8a6c570..89b1e6a 100644
--- a/av1/encoder/x86/ml_sse3.c
+++ b/av1/encoder/x86/ml_sse3.c
@@ -162,7 +162,7 @@
     const float *layer_weights = nn_config->weights[layer];
     const float *layer_bias = nn_config->bias[layer];
     bool output_layer = (layer == nn_config->num_hidden_layers);
-    float *const output_nodes = output_layer ? output : buf[buf_index];
+    float *const output_nodes = output_layer ? output : &buf[buf_index][0];
     const int num_outputs = output_layer ? nn_config->num_outputs
                                          : nn_config->num_hidden_nodes[layer];