xfs: fix memory leak in xfs_growfs_check_rtgeom()
Free the "nmp" allocation before returning -EINVAL.
Fixes: dc68c0f60169 ("xfs: fix the zoned RT growfs check for zone alignment")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
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