image: fdt: bail out with error if no boot time FDT image found

Currently the boot continues if the FDT image is clearly corrupted,
which just causes the loaded OS to hang. Abort boot properly if the FDT
is corrupted.

Signed-off-by: Tero Kristo <t-kristo@ti.com>

common/image-fdt.c

@@ -426,7 +426,7 @@ int boot_get_fdt(int flag, int argc, char *const argv[], uint8_t arch,
 			break;
 		default:
 			puts("ERROR: Did not find a cmdline Flattened Device Tree\n");
-			goto no_fdt;
+			goto error;
 		}
 
 		printf("   Booting using the fdt blob at %#08lx\n", fdt_addr);