[PATCH 4.19 329/350] gtp: simplify error handling code in gtp_encap_enable()

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4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>

[ Upstream commit b289ba5e07105548b8219695e5443d807a825eb8 ]

'gtp_encap_disable_sock(sk)' handles the case where sk is NULL, so there
is no need to test it before calling the function.

This saves a few line of code.

Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Reviewed-by: Simon Horman <simon.horman@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Stable-dep-of: 7515e37bce5c ("gtp: allow -1 to be specified as file description from userspace")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/gtp.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index 733cafb0888f6..8ad324ef99a2b 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -865,8 +865,7 @@ static int gtp_encap_enable(struct gtp_dev *gtp, struct nlattr *data[])
 
 		sk1u = gtp_encap_enable_socket(fd1, UDP_ENCAP_GTP1U, gtp);
 		if (IS_ERR(sk1u)) {
-			if (sk0)
-				gtp_encap_disable_sock(sk0);
+			gtp_encap_disable_sock(sk0);
 			return PTR_ERR(sk1u);
 		}
 	}
@@ -874,10 +873,8 @@ static int gtp_encap_enable(struct gtp_dev *gtp, struct nlattr *data[])
 	if (data[IFLA_GTP_ROLE]) {
 		role = nla_get_u32(data[IFLA_GTP_ROLE]);
 		if (role > GTP_ROLE_SGSN) {
-			if (sk0)
-				gtp_encap_disable_sock(sk0);
-			if (sk1u)
-				gtp_encap_disable_sock(sk1u);
+			gtp_encap_disable_sock(sk0);
+			gtp_encap_disable_sock(sk1u);
 			return -EINVAL;
 		}
 	}
-- 
2.43.0







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