hwmon: (applesmc) Silence uninitialized warnings

Some error paths do not set a result, leading to the (false)
assumption that the value may be used uninitialized. Set results for
those paths as well.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
index 1b13085..f082e48 100644
--- a/drivers/hwmon/applesmc.c
+++ b/drivers/hwmon/applesmc.c
@@ -344,8 +344,10 @@
 	while (begin != end) {
 		int middle = begin + (end - begin) / 2;
 		entry = applesmc_get_entry_by_index(middle);
-		if (IS_ERR(entry))
+		if (IS_ERR(entry)) {
+			*lo = 0;
 			return PTR_ERR(entry);
+		}
 		if (strcmp(entry->key, key) < 0)
 			begin = middle + 1;
 		else
@@ -364,8 +366,10 @@
 	while (begin != end) {
 		int middle = begin + (end - begin) / 2;
 		entry = applesmc_get_entry_by_index(middle);
-		if (IS_ERR(entry))
+		if (IS_ERR(entry)) {
+			*hi = smcreg.key_count;
 			return PTR_ERR(entry);
+		}
 		if (strcmp(key, entry->key) < 0)
 			end = middle;
 		else