[PATCH] can: flexcan: Fix an uninitialized variable issue

[Christophe JAILLET <christophe.jaillet@wanadoo.fr>]

If both 'clk_ipg' and 'clk_per' are NULL, we return an un-init value.
So set 'err' to 0, to return success in such a case.

Fixes: d9cead75b1c6 ("can: flexcan: add mcf5441x support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
Another way to fix it is to remove the NULL checks for 'clk_ipg' and
'clk_per' that been added in commit d9cead75b1c6.

They look useless to me because 'clk_prepare_enable()' returns 0 if it is
passed a NULL pointer.
Having these explicit tests is maybe informational (i.e. these pointers
can really be NULL) or have been added to silent a compiler or a static
checker.

So, in case, I've left the tests and just fixed the un-init 'err' variable
issue.
---
 drivers/net/can/flexcan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 54ffb796a320..7734229aa078 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -649,7 +649,7 @@ static inline void flexcan_error_irq_disable(const struct flexcan_priv *priv)
 
 static int flexcan_clks_enable(const struct flexcan_priv *priv)
 {
-	int err;
+	int err = 0;
 
 	if (priv->clk_ipg) {
 		err = clk_prepare_enable(priv->clk_ipg);
-- 
2.30.2