reset: fix reset_get_bulk when phandle error

This fixes the Coverity Defect CID 175348 when dev_count_phandle_with_args()
returns a negative value.

Fixes: 0c28233903b5 ("reset: Add get/assert/deassert/release for bulk of reset signals")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/drivers/reset/reset-uclass.c b/drivers/reset/reset-uclass.c
index 9a5c9c9..fa4f653 100644
--- a/drivers/reset/reset-uclass.c
+++ b/drivers/reset/reset-uclass.c
@@ -88,8 +88,8 @@
 	bulk->count = 0;
 
 	count = dev_count_phandle_with_args(dev, "resets", "#reset-cells");
-	if (!count)
-		return 0;
+	if (count < 1)
+		return count;
 
 	bulk->resets = devm_kcalloc(dev, count, sizeof(struct reset_ctl),
 				    GFP_KERNEL);