dm: core: remove redundant assignment

Variable count is initialized at the start of every round of the while
loop and it is not used after the while loop. So there is no need to
initialize it beforehand.

Identified by cppcheck.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>

drivers/core/of_access.c

@@ -577,7 +577,7 @@ static int __of_parse_phandle_with_args(const struct device_node *np,
 {
 	const __be32 *list, *list_end;
 	int rc = 0, cur_index = 0;
-	uint32_t count = 0;
+	uint32_t count;
 	struct device_node *node = NULL;
 	phandle phandle;
 	int size;