staging: unisys: fix sizeof() in visor_memregion_create_overlapped()

Use the variable name rather than the type in the sizeof() call in this
function.
Signed-off-by: NBenjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/visorutil/memregion_direct.c

@@ -86,7 +86,7 @@ visor_memregion_create_overlapped(struct memregion *parent, ulong offset,
 		       __func__, offset, nbytes);
 		return NULL;
 	}
-	memregion = kzalloc(sizeof(struct memregion), GFP_KERNEL|__GFP_NORETRY);
+	memregion = kzalloc(sizeof(*memregion), GFP_KERNEL|__GFP_NORETRY);
 	if (memregion == NULL) {
 		ERRDRV("%s allocation failed", __func__);
 		return NULL;