[PATCH 5.5 106/119] thunderbolt: Fix error code in tb_port_is_width_supported()

[Greg Kroah-Hartman]

From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

commit e9d0e7511fda92a6511904996dd0aa57b6d7687a upstream.

This function is type bool, and it's supposed to return true on success.
Unfortunately, this path takes negative error codes and casts them to
bool (true) so it's treated as success instead of failure.

Fixes: 91c0c12080d0 ("thunderbolt: Add support for lane bonding")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/thunderbolt/switch.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -848,7 +848,7 @@ static bool tb_port_is_width_supported(s
 	ret = tb_port_read(port, &phy, TB_CFG_PORT,
 			   port->cap_phy + LANE_ADP_CS_0, 1);
 	if (ret)
-		return ret;
+		return false;
 
 	widths = (phy & LANE_ADP_CS_0_SUPPORTED_WIDTH_MASK) >>
 		LANE_ADP_CS_0_SUPPORTED_WIDTH_SHIFT;