[PATCH v2] soc: qcom: llcc: Check return value on Broadcast_OR reg read

[Unnathi Chalicheemala]

Commit c72ca343f911 ("soc: qcom: llcc: Add v4.1 HW version support")
introduced a new 4.1 if statement in llcc_update_act_ctrl() without
considering that ret might be overwritten. So, adding return value check
after Broadcast_OR register read in llcc_update_act_ctrl().

Fixes: c72ca343f911 ("soc: qcom: llcc: Add v4.1 HW version support")

Signed-off-by: Unnathi Chalicheemala <quic_uchalich@xxxxxxxxxxx>
Reviewed-by: Elliot Berman <quic_eberman@xxxxxxxxxxx>

---
Changes in v2:
- Referenced right commit to be fixed in the commit message.
- Added Elliot's R-B tag.
- Modified commit message to better explain problem statement.
- Link to v1: https://lore.kernel.org/all/20240202-fix_llcc_update_act_ctrl-v1-1-d36df95c8bd5@xxxxxxxxxxx/

---
 drivers/soc/qcom/llcc-qcom.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/soc/qcom/llcc-qcom.c b/drivers/soc/qcom/llcc-qcom.c
index 4ca88eaebf06..cbef0dea1d5d 100644
--- a/drivers/soc/qcom/llcc-qcom.c
+++ b/drivers/soc/qcom/llcc-qcom.c
@@ -859,6 +859,8 @@ static int llcc_update_act_ctrl(u32 sid,
 	ret = regmap_read_poll_timeout(drv_data->bcast_regmap, status_reg,
 				      slice_status, !(slice_status & status),
 				      0, LLCC_STATUS_READ_DELAY);
+	if (ret)
+		return ret;
 
 	if (drv_data->version >= LLCC_VERSION_4_1_0_0)
 		ret = regmap_write(drv_data->bcast_regmap, act_clear_reg,
-- 
2.25.1