boot: remove dead code in bootflow_check()

The 'return 0;' statement is not reachable. Remove it.
'else' is superfluous after an if statement with return.

Addresses-Coverity-ID: 352451 ("Logically dead code")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/boot/bootflow.c b/boot/bootflow.c
index 1ea2966..05484fd 100644
--- a/boot/bootflow.c
+++ b/boot/bootflow.c
@@ -361,7 +361,7 @@
 	}
 
 	/* Unless there is nothing more to try, move to the next device */
-	else if (ret != BF_NO_MORE_PARTS && ret != -ENOSYS) {
+	if (ret != BF_NO_MORE_PARTS && ret != -ENOSYS) {
 		log_debug("Bootdev '%s' part %d method '%s': Error %d\n",
 			  dev->name, iter->part, iter->method->name, ret);
 		/*
@@ -371,10 +371,8 @@
 		if (iter->flags & BOOTFLOWIF_ALL)
 			return log_msg_ret("all", ret);
 	}
-	if (ret)
-		return log_msg_ret("check", ret);
 
-	return 0;
+	return log_msg_ret("check", ret);
 }
 
 int bootflow_scan_first(struct udevice *dev, const char *label,