ip netns: Show error message if mkdir failed to create /var/run/netns

Currently if mkdir failed with "Permission denied" error then "mount --make-shared ..."
error message will be showed because /var/run/netns does not exist.

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
1 file changed