net: ti: icss-iep: Fix incorrect type for return value in extts_enable()

[ Upstream commit 5f1d1d1 ]

The variable ret in icss_iep_extts_enable() was incorrectly declared
as u32, while the function returns int and may return negative error
codes. This will cause sign extension issues and incorrect error
propagation. Update ret to be int to fix error handling.

This change corrects the declaration to avoid potential type mismatch.

Fixes: c1e0230 ("net: ti: icss-iep: Add IEP driver")
Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250805142323.1949406-1-alok.a.tiwari@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: aloktiwa

drivers/net/ethernet/ti/icssg/icss_iep.c

@@ -621,7 +621,8 @@ static int icss_iep_pps_enable(struct icss_iep *iep, int on)
 
 static int icss_iep_extts_enable(struct icss_iep *iep, u32 index, int on)
 {
-	u32 val, cap, ret = 0;
+	u32 val, cap;
+	int ret = 0;
 
 	mutex_lock(&iep->ptp_clk_mutex);