cifs: small variable name cleanup
cifs: small variable name cleanup

server and ses->server are the same, but it's a little bit ugly that we
lock &ses->server->srv_mutex and unlock &server->srv_mutex.  It causes
a false positive in Smatch about inconsistent locking.

Signed-off-by: Dan Carpenter <ff341aa343d564f9e53e9dcb6996be8c04859a66@oracle.com>
Signed-off-by: Steve French <d47560e3bac353b8d509d093b1d727868ac7ddf3@us.ibm.com>
Signed-off-by: Steve French <51565b4e5841e493fd669866e11ea3c7c0d781cc@gmail.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas