powerpc/mpc85xx: Fix portal setup

Missing nodes of crypto, pme, etc in device tree is not a fatal error.
Setting up the qman portal should skip the missing node and continue
to finish the rest.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>

arch/powerpc/cpu/mpc85xx/portals.c

@@ -128,24 +128,32 @@ static int fdt_qportal(void *blob, int off, int id, char *name,
 
 	childoff = fdt_subnode_offset(blob, off, name);
 	if (create) {
-		if (childoff <= 0)
-			childoff = fdt_add_subnode(blob, off, name);
+		char handle[64], *p;
 
-		if (childoff > 0) {
-			char handle[64], *p;
+		strncpy(handle, name, sizeof(handle));
+		p = strchr(handle, '@');
+		if (!strncmp(name, "fman", 4)) {
+			*p = *(p + 1);
+			p++;
+		}
+		*p = '\0';
 
-			strncpy(handle, name, sizeof(handle));
-			p = strchr(handle, '@');
-			if (!strncmp(name, "fman", 4)) {
-				*p = *(p + 1);
-				p++;
-			}
-			*p = '\0';
+		dev_off = fdt_path_offset(blob, handle);
+		/* skip this node if alias is not found */
+		if (dev_off == -FDT_ERR_BADPATH)
+			return 0;
+		if (dev_off < 0)
+			return dev_off;
 
-			dev_off = fdt_path_offset(blob, handle);
-			if (dev_off < 0)
-				return dev_off;
+		if (childoff <= 0)
+			childoff = fdt_add_subnode(blob, off, name);
 
+		/* need to update the dev_off after adding a subnode */
+		dev_off = fdt_path_offset(blob, handle);
+		if (dev_off < 0)
+			return dev_off;
+
+		if (childoff > 0) {
 			dev_handle = fdt_get_phandle(blob, dev_off);
 			if (dev_handle <= 0) {
 				dev_handle = fdt_alloc_phandle(blob);