benchmarks/gem_create: Report combined concurrent allocation rate

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/benchmarks/gem_create.c b/benchmarks/gem_create.c
index 519ab92..1e7efac 100644
--- a/benchmarks/gem_create.c
+++ b/benchmarks/gem_create.c
@@ -177,7 +177,7 @@
 			for (int child = 0; child < ncpus; child++)
 				shared[ncpus] += shared[child];
 
-			printf("%7.3f\n", shared[ncpus] / ncpus);
+			printf("%7.3f\n", shared[ncpus]);
 		}
 	}