The patch fixes following build error:

  CC      drivers/mtd/nand/fsl_upm.o
drivers/mtd/nand/fsl_upm.c: In function 'fun_chip_init':
drivers/mtd/nand/fsl_upm.c:168: warning: passing argument 2 of 'of_mtd_parse_partitions' from incompatible pointer type
drivers/mtd/nand/fsl_upm.c:168: warning: passing argument 3 of 'of_mtd_parse_partitions' from incompatible pointer type
drivers/mtd/nand/fsl_upm.c:168: error: too many arguments to function 'of_mtd_parse_partitions'
make[1]: *** [drivers/mtd/nand/fsl_upm.o] Error 1

The breakage was introduced in 69fd3a8d
("[MTD] remove unused mtd parameter in of_mtd_parse_partitions()").

While at it, also add a check for the of_mtd_parse_partitions() return
value.
Signed-off-by: NWolfgang Grandegger <wg@grandegger.com>
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>