[PATCH v2] cw1200: Fix a signedness bug in cw1200_load_firmware()

[Dan Carpenter <dan.carpenter@oracle.com>]

The "priv->hw_type" is an enum and in this context GCC will treat it
as an unsigned int so the error handling will never trigger.

Fixes: a910e4a94f69 ("cw1200: add driver for the ST-E CW1100 & CW1200 WLAN chipsets")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
v2: better style and preserve the error code.

 drivers/net/wireless/st/cw1200/fwio.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/st/cw1200/fwio.c b/drivers/net/wireless/st/cw1200/fwio.c
index 6574e78e05ea..2a03dc533b6a 100644
--- a/drivers/net/wireless/st/cw1200/fwio.c
+++ b/drivers/net/wireless/st/cw1200/fwio.c
@@ -320,12 +320,12 @@ int cw1200_load_firmware(struct cw1200_common *priv)
 		goto out;
 	}
 
-	priv->hw_type = cw1200_get_hw_type(val32, &major_revision);
-	if (priv->hw_type < 0) {
+	ret = cw1200_get_hw_type(val32, &major_revision);
+	if (ret < 0) {
 		pr_err("Can't deduce hardware type.\n");
-		ret = -ENOTSUPP;
 		goto out;
 	}
+	priv->hw_type = ret;
 
 	/* Set DPLL Reg value, and read back to confirm writes work */
 	ret = cw1200_reg_write_32(priv, ST90TDS_TSET_GEN_R_W_REG_ID,
-- 
2.20.1