video: Convert vmalloc/memset to vzalloc

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/video/arcfb.c b/drivers/video/arcfb.c
index 3ec4923..c22e8d3 100644
--- a/drivers/video/arcfb.c
+++ b/drivers/video/arcfb.c
@@ -515,11 +515,10 @@
 
 	/* We need a flat backing store for the Arc's
 	   less-flat actual paged framebuffer */
-	if (!(videomemory = vmalloc(videomemorysize)))
+	videomemory = vzalloc(videomemorysize);
+	if (!videomemory)
 		return retval;
 
-	memset(videomemory, 0, videomemorysize);
-
 	info = framebuffer_alloc(sizeof(struct arcfb_par), &dev->dev);
 	if (!info)
 		goto err;