dm: core: remove unnecessary return condition in driver lookup

The variable "drv" never becomes NULL because ll_entry_start()
always returns a valid pointer even if there are no entries.

The case "n_ents == 0" is covered by the following "for" loop.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/core/lists.c b/drivers/core/lists.c
index 3a1823d..058f278 100644
--- a/drivers/core/lists.c
+++ b/drivers/core/lists.c
@@ -25,9 +25,6 @@
 	const int n_ents = ll_entry_count(struct driver, driver);
 	struct driver *entry;
 
-	if (!drv || !n_ents)
-		return NULL;
-
 	for (entry = drv; entry != drv + n_ents; entry++) {
 		if (!strcmp(name, entry->name))
 			return entry;