net/9p/trans_virtio.c: kmalloc() enough memory

The Coverity checker spotted that less memory than required was
allocated.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
index 9e3d81c..de7a9f5 100644
--- a/net/9p/trans_virtio.c
+++ b/net/9p/trans_virtio.c
@@ -110,7 +110,7 @@
 		}
 		for (count = old_max; count < c->max_tag; count++) {
 			c->reqs[count].status = REQ_STATUS_IDLE;
-			c->reqs[count].wq = kmalloc(sizeof(wait_queue_t),
+			c->reqs[count].wq = kmalloc(sizeof(wait_queue_head_t),
 								GFP_ATOMIC);
 			if (!c->reqs[count].wq) {
 				printk(KERN_ERR "Couldn't grow tag array\n");