make assert statement more in line with comment

Author: am17an

ggml/src/ggml-cuda/rope.cu

@@ -429,7 +429,7 @@ void ggml_cuda_op_rope_impl(ggml_backend_cuda_context & ctx,
     GGML_ASSERT( dst->type == GGML_TYPE_F32 ||  dst->type == GGML_TYPE_F16);
     // When not fused, src0 and dst types must match
     // When fused (ROPE+VIEW+SET_ROWS), src0 may be F32 and dst may be F16
-    GGML_ASSERT(src0->type == dst->type || dst->type == GGML_TYPE_F16);
+    GGML_ASSERT(src0->type == dst->type || (src0->type == GGML_TYPE_F32 && dst->type == GGML_TYPE_F16));
 
     const int64_t ne00 = src0->ne[0]; // head dims
     const int64_t ne01 = src0->ne[1]; // num heads