GODRIVER-3257 Update client.go (#1681)

Co-authored-by: Qingyang Hu <[email protected]>

Author: anandkumarjha54321

mongo/client.go

@@ -209,10 +209,6 @@ func NewClient(opts ...*options.ClientOptions) (*Client, error) {
 		clientOpt.SetMaxPoolSize(defaultMaxPoolSize)
 	}
 
-	if err != nil {
-		return nil, err
-	}
-
 	cfg, err := topology.NewConfig(clientOpt, client.clock)
 	if err != nil {
 		return nil, err