octeontx: do not require cavium BDK node to be present

The cavium,bdk node is a non-standard dt node used by the BDK and
therefore it is removed from the dt before booting Linux. Do not
require this node to exist as it won't for standard dt's.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/board/Marvell/octeontx/board-fdt.c b/board/Marvell/octeontx/board-fdt.c
index 0b05ef1..1db2a4a 100644
--- a/board/Marvell/octeontx/board-fdt.c
+++ b/board/Marvell/octeontx/board-fdt.c
@@ -281,20 +281,16 @@
 	}
 
 	if (blob) {
+		/* delete cavium,bdk node if it exists */
 		offset = fdt_path_offset(blob, "/cavium,bdk");
-		if (offset < 0) {
-			printf("ERROR: FDT BDK node not found\n");
-			return offset;
+		if (offset >= 0) {
+			ret = fdt_del_node(blob, offset);
+			if (ret < 0) {
+				printf("WARNING : could not remove bdk node\n");
+				return ret;
+			}
+			debug("%s deleted bdk node\n", __func__);
 		}
-
-		/* delete node */
-		ret = fdt_del_node(blob, offset);
-		if (ret < 0) {
-			printf("WARNING : could not remove bdk node\n");
-			return ret;
-		}
-
-		debug("%s deleted bdk node\n", __func__);
 	}
 
 	return 0;