Update common.py

Fixed a bug. When using a higher version of tensorrt and val.py to verify the model, the following problems may occur:
getPluginCreator could not find plugin: InstanceNormalization_TRT version: 1
Serialization assertion creator failed.Cannot deserialize plugin since corresponding IPluginCreator not found in Plugin Registry

Signed-off-by: Melt <60842553+NeKoooo233@users.noreply.github.com>

models/common.py

@@ -521,6 +521,7 @@ def __init__(self, weights="yolov5s.pt", device=torch.device("cpu"), dnn=False,
             Binding = namedtuple("Binding", ("name", "dtype", "shape", "data", "ptr"))
             logger = trt.Logger(trt.Logger.INFO)
             with open(w, "rb") as f, trt.Runtime(logger) as runtime:
+                trt.init_libnvinfer_plugins(None, "")
                 model = runtime.deserialize_cuda_engine(f.read())
             context = model.create_execution_context()
             bindings = OrderedDict()