DT: Fix potential nullptr dereference in interrupt parsing

Return error code explicitly so that we can ensure that the caller will
go through the error handling code.

Bug: 286285335
Test: Build
Change-Id: I68556711d992e4f7e80e5304ffb54c284f3289dd
Signed-off-by: Edmond Chung <edmondchung@google.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/lwis_dt.c b/lwis_dt.c
index b0e56e7..f4ed3b2 100644
--- a/lwis_dt.c
+++ b/lwis_dt.c
@@ -441,7 +441,7 @@ static int parse_irq_reg_bits(struct device_node *info, int *bits_num_result, u3
 	if (*bits_num_result != int_reg_bits_num) {
 		pr_err("Error getting int-reg-bits: %d\n", int_reg_bits_num);
 		kfree(int_reg_bits);
-		return int_reg_bits_num;
+		return -EINVAL;
 	}
 	*reg_bits_result = int_reg_bits;