FIS: repare incorrect return value with ramdisk handling

Microblaze and PowerPC use boot_get_ramdisk for loading
ramdisk to memory with checking return value.
Return 0 means success. Return 1 means failed.
Here is correspond part of code from bootm.c which check
return code.

ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_PPC,
		&rd_data_start, &rd_data_end);
if (ret)
	goto error;

Signed-off-by: Michal Simek <monstr@monstr.eu>

common/image.c

@@ -827,13 +827,13 @@ int boot_get_ramdisk (int argc, char *argv[], bootm_headers_t *images,
 			cfg_noffset = fit_conf_get_node (fit_hdr, fit_uname_config);
 			if (cfg_noffset < 0) {
 				debug ("*  ramdisk: no such config\n");
-				return 0;
+				return 1;
 			}
 
 			rd_noffset = fit_conf_get_ramdisk_node (fit_hdr, cfg_noffset);
 			if (rd_noffset < 0) {
 				debug ("*  ramdisk: no ramdisk in config\n");
-				return 0;
+				return 1;
 			}
 		}
 #endif
@@ -872,7 +872,7 @@ int boot_get_ramdisk (int argc, char *argv[], bootm_headers_t *images,
 			if (!fit_check_format (fit_hdr)) {
 				puts ("Bad FIT ramdisk image format!\n");
 				show_boot_progress (-120);
-				return 0;
+				return 1;
 			}
 			show_boot_progress (121);
 
@@ -887,7 +887,7 @@ int boot_get_ramdisk (int argc, char *argv[], bootm_headers_t *images,
 				if (cfg_noffset < 0) {
 					puts ("Could not find configuration node\n");
 					show_boot_progress (-122);
-					return 0;
+					return 1;
 				}
 				fit_uname_config = fdt_get_name (fit_hdr, cfg_noffset, NULL);
 				printf ("   Using '%s' configuration\n", fit_uname_config);
@@ -902,20 +902,20 @@ int boot_get_ramdisk (int argc, char *argv[], bootm_headers_t *images,
 			if (rd_noffset < 0) {
 				puts ("Could not find subimage node\n");
 				show_boot_progress (-124);
-				return 0;
+				return 1;
 			}
 
 			printf ("   Trying '%s' ramdisk subimage\n", fit_uname_ramdisk);
 
 			show_boot_progress (125);
 			if (!fit_check_ramdisk (fit_hdr, rd_noffset, arch, images->verify))
-				return 0;
+				return 1;
 
 			/* get ramdisk image data address and length */
 			if (fit_image_get_data (fit_hdr, rd_noffset, &data, &size)) {
 				puts ("Could not find ramdisk subimage data!\n");
 				show_boot_progress (-127);
-				return 0;
+				return 1;
 			}
 			show_boot_progress (128);
 
@@ -925,7 +925,7 @@ int boot_get_ramdisk (int argc, char *argv[], bootm_headers_t *images,
 			if (fit_image_get_load (fit_hdr, rd_noffset, &rd_load)) {
 				puts ("Can't get ramdisk subimage load address!\n");
 				show_boot_progress (-129);
-				return 0;
+				return 1;
 			}
 			show_boot_progress (129);