[GPU] Fix comment for prelu fusing

Signed-off-by: Min, Byungil <byungil.min@intel.com>

Author: byungilm

src/plugins/intel_gpu/src/graph/graph_optimizer/prepare_primitive_fusing.cpp

@@ -371,7 +371,8 @@ void prepare_primitive_fusing::fuse_bias(program &p) {
         if (replace_candidate.is_type<convolution>()) {
             auto& conv = replace_candidate.as<convolution>();
             auto desc = conv.get_primitive();
-            // XXX: deformable convolution does not support bias fusing at this moment. It is just not tested and deformable_mode value is not properly handled below.
+            // XXX: deformable convolution does not support bias fusing at this moment.
+            // It is just not tested and deformable_mode value is not properly handled below.
             if (desc->deformable_mode)
                 continue;
             primitive_id biases = bias_name;
@@ -746,8 +747,9 @@ void prepare_primitive_fusing::fuse_simple_primitives(program &p) {
                     return;
                 }
 
-                if (activation_func == cldnn::activation_func::relu_negative_slope &&
-                    input.get_output_layout().batch() > 1 && input.is_type<convolution>()) {
+                auto input_layout = input.get_output_layout();
+                if (input.is_type<convolution>() && activation_func == cldnn::activation_func::relu_negative_slope &&
+                    input_layout.is_static() && input_layout.batch() > 1) {
                     return;
                 }