Taehee Yoo fcf8f4eb81 net: rmnet: print error message when command fails ...

When rmnet netlink command fails, it doesn't print any error message.
So, users couldn't know the exact reason.
In order to tell the exact reason to the user, the extack error message
is used in this patch.

Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2020-03-05 11:47:10 -08:00

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