ext4: prevent memory leaks from ext4_mb_init_backend() on error path
ext4: prevent memory leaks from ext4_mb_init_backend() on error path

In ext4_mb_init(), if the s_locality_group allocation fails it will
currently cause the allocations made in ext4_mb_init_backend() to
be leaked.  Moving the ext4_mb_init_backend() allocation after the
s_locality_group allocation avoids that problem.

Signed-off-by: Yu Jian <58cd98bb9f3c24e3c051e5e297b1d47bcf23029f@whamcloud.com>
Signed-off-by: Andreas Dilger <fd4823dd86d134508df78a168e24c446ce7699f3@whamcloud.com>
Signed-off-by: "Theodore Ts'o" <4ed386e0495d3e109932df055831d9ec2f824927@mit.edu>

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