env_nand.c: clarify log messages when env reading fails

The single message is misleading, since there is no equivalent success
note when reading the other copy succeeds. Instead, warn if one of the
redundant copies could not be loaded and emphasise on the error when
reading both fails.

Signed-off-by: Phil Sutter <phil.sutter@viprinet.com>
diff --git a/common/env_nand.c b/common/env_nand.c
index 22e72a2..382e8ae 100644
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -331,6 +331,7 @@
 void env_relocate_spec(void)
 {
 #if !defined(ENV_IS_EMBEDDED)
+	int read1_fail = 0, read2_fail = 0;
 	int crc1_ok = 0, crc2_ok = 0;
 	env_t *ep, *tmp_env1, *tmp_env2;
 
@@ -342,11 +343,14 @@
 		goto done;
 	}
 
-	if (readenv(CONFIG_ENV_OFFSET, (u_char *) tmp_env1))
-		puts("No Valid Environment Area found\n");
+	read1_fail = readenv(CONFIG_ENV_OFFSET, (u_char *) tmp_env1);
+	read2_fail = readenv(CONFIG_ENV_OFFSET_REDUND, (u_char *) tmp_env2);
 
-	if (readenv(CONFIG_ENV_OFFSET_REDUND, (u_char *) tmp_env2))
-		puts("No Valid Redundant Environment Area found\n");
+	if (read1_fail && read2_fail)
+		puts("*** Error - No Valid Environment Area found\n");
+	else if (read1_fail || read2_fail)
+		puts("*** Warning - some problems detected "
+		     "reading environment; recovered successfully\n");
 
 	crc1_ok = crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc;
 	crc2_ok = crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc;