Description: ext4: fix memory leak in ext4_mb_init_backend on error path.
References:
Notes:
 carnil> First introducing commit could not be determined.
Bugs:
upstream: released (5.13-rc5) [a8867f4e3809050571c98de7a2d465aff5e4daf5]
6.7-upstream-stable: N/A "Fixed before branching point"
6.6-upstream-stable: N/A "Fixed before branching point"
6.1-upstream-stable: N/A "Fixed before branching point"
5.10-upstream-stable: released (5.10.43) [2050c6e5b161e5e25ce3c420fef58b24fa388a49]
4.19-upstream-stable: needed
sid: released (5.10.46-1)
6.1-bookworm-security: N/A "Fixed before branching point"
5.10-bullseye-security: N/A "Fixed before branching point"
4.19-buster-security: needed