regulator: core: Fix default return value for _get()

Now that we are defaulting to providing dummy regulators fix the logic
for substituting a dummy by making the default return code -EPROBE_DEFER.

Reported-by: Thierry Reding <[email protected]>
Tested-by: Thierry Reding <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index ac3a864..088b41a 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1247,7 +1247,7 @@
 	struct regulator_dev *rdev;
 	struct regulator *regulator = ERR_PTR(-EPROBE_DEFER);
 	const char *devname = NULL;
-	int ret = 0;
+	int ret = -EPROBE_DEFER;
 
 	if (id == NULL) {
 		pr_err("get() with no identifier\n");