staging: exfat: Clean up return code - FFS_MEMORYERR

Convert FFS_MEMORYERR to -ENOMEM
Signed-off-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Link: https://lore.kernel.org/r/20191024155327.1095907-9-Valdis.Kletnieks@vt.eduSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/exfat/exfat.h

@@ -218,7 +218,6 @@ static inline u16 get_row_index(u16 i)
 #define FFS_NOTOPENED           12
 #define FFS_MAXOPENED           13
 #define FFS_EOF                 15
-#define FFS_MEMORYERR           17
 #define FFS_ERROR               19
 
 #define NUM_UPCASE              2918

drivers/staging/exfat/exfat_core.c

@@ -544,7 +544,7 @@ s32 load_alloc_bitmap(struct super_block *sb)
 							       sizeof(struct buffer_head *),
 							       GFP_KERNEL);
 				if (!p_fs->vol_amap)
-					return FFS_MEMORYERR;
+					return -ENOMEM;
 
 				sector = START_SECTOR(p_fs->map_clu);
 
@@ -715,7 +715,7 @@ static s32 __load_upcase_table(struct super_block *sb, sector_t sector,
 	upcase_table = p_fs->vol_utbl = kmalloc(UTBL_COL_COUNT * sizeof(u16 *),
 						GFP_KERNEL);
 	if (!upcase_table)
-		return FFS_MEMORYERR;
+		return -ENOMEM;
 	memset(upcase_table, 0, UTBL_COL_COUNT * sizeof(u16 *));
 
 	while (sector < end_sector) {
@@ -755,7 +755,7 @@ static s32 __load_upcase_table(struct super_block *sb, sector_t sector,
 					upcase_table[col_index] = kmalloc_array(UTBL_ROW_COUNT,
 						sizeof(u16), GFP_KERNEL);
 					if (!upcase_table[col_index]) {
-						ret = FFS_MEMORYERR;
+						ret = -ENOMEM;
 						goto error;
 					}
 
@@ -795,7 +795,7 @@ static s32 __load_default_upcase_table(struct super_block *sb)
 	upcase_table = p_fs->vol_utbl = kmalloc(UTBL_COL_COUNT * sizeof(u16 *),
 						GFP_KERNEL);
 	if (!upcase_table)
-		return FFS_MEMORYERR;
+		return -ENOMEM;
 	memset(upcase_table, 0, UTBL_COL_COUNT * sizeof(u16 *));
 
 	for (i = 0; index <= 0xFFFF && i < NUM_UPCASE * 2; i += 2) {
@@ -818,7 +818,7 @@ static s32 __load_default_upcase_table(struct super_block *sb)
 									sizeof(u16),
 									GFP_KERNEL);
 				if (!upcase_table[col_index]) {
-					ret = FFS_MEMORYERR;
+					ret = -ENOMEM;
 					goto error;
 				}